Watch The O.C. Online Free - Full Episodes

Newport was forever changed with the arrival of outside Ryan Atwood four years ago. In the series finale, an emotional ending shows what happens to each of the lives that Ryan touched, including the Cohens, Coopers, and his most recent love, Taylor.

After the earthquake, Newport residents scramble to make sure everyone is alright. Sandy tells Seth to say put, but Seth does whatever he can to be with Ryan and Taylor. When Seth and Ryan finally meet back up, Seth begins to realize what it means to be a brother. While Summer and Taylor can't find Pancakes and begin frantically searching for him, Taylor sees that bonds people have with their family are greater than she could have ever imagined. Meanwhile, Julie and Kaitlin are stuck in an ice cream shop until the only man for Julie arrives to save them. But everything isn't as it seems when everyone meets up at the Cohen house.

Taylor and Ryan finally say those three words to each other, but did they both mean it? Summer challenges Seth to find something he's passionate about. Kirsten, for the first time in her life, has a realization about what Newport is really all about. Meanwhile, Kaitlin continues to attempt to break up her mother's relationship with Frank, but Julie begins to notice Kaitlin's efforts and ends up making a change. As the night comes to a close, Newport is shaken up by an earthquake.

Taylor concocts a plan to make things right between Ryan and his father. Julie continues to further her relationship with Bullit but when Julie and Frank run into each other in front of Ryan and Taylor it becomes apparent that Julie is having a secret affair with Frank. When Kaitlin finds out that Ryan and Taylor are working to get Julie and Frank together, she goes out of her way to make her mother like Bullit, forcing Julie to choose between Frank and Bullit. Meanwhile, Summer begins to question if Seth is the one for her after she and Seth get a psychic reading.

As Kirsten's 40th birthday is nearing, Ryan and the Cohen men prepare a party for her while Kirsten receives news that will forever change her life. Meanwhile, Julie has a secret love affair that Kaitlin tries to stop; and Taylor visits a therapist who gives her advice while Ryan pretends not to miss her. Elsewhere, when the plan to save Newport Chuck falls through, Che finally learns that Seth is not his soulmate.

Seth and Che take a trip together to the forest. There, Che has a dream that tells him that his spirit is in love with an unexpected someone. After the trip, Seth and Summer are finally able to speak to one another. Meanwhile, Julie finds a way back into Kirsten's life, Julie-style, Kaitlin shuts out Will, and Taylor decides that she has to stop speaking to Ryan.

Henri-Michel, Taylor's ex-husband, arrives in the O.C. to promote his erotic memoir of his times with Taylor. When Henri-Michel and Ryan meet and Ryan learns of Taylor's time in France with Henri-Michel, Ryan begins to second guess his relationship with Taylor. Seth visits Dr. Roberts in order to ask for Summer's hand in marriage while Summer visits Holly who has a vision of Summer's future. Meanwhile, Kaitlin realizes that she has feelings for Will.

When Kaitlin fails a class presentation, she's paired up with Will, the Harbor band geek. Kaitlin thinks that she can get Will to do her work for her, but when he begins to challenge her, sparks between the two emerge. After their new commitment from New Year's Eve, Seth and Summer begin making plans but fail to recognize their true feelings. Meanwhile, Sandy confronts Frank and Julie reveals Frank's true identity to Kirsten.

It's New Year's Eve in the O.C. and to celebrate the holiday, Ryan puts together a road trip as a surprise for Taylor, but his surprise is spoiled when Summer finds out that Seth hasn't planned anything for her. Later, the four head to Las Vegas where they meet a raver who may be able to help Summer's future. Back in Newport, the Bullit has a friend look into Julie's accounting.

It's once again Chrismukkah in the O.C. and it's up to Taylor and Ryan to make Chrismukkah as it should be. After Ryan and Taylor fall of the roof of the Cohen's house, Ryan falls unconscious. While in the hospital, Ryan dreams of how life would be if he never came to Newport. With Taylor's help, Ryan is able to get life back to the way that it was before the accident.

Seth travels to Providence to visit Summer, but when he gets to Brown all he finds is an empty dorm room. While Seth is away, Kirsten and Sandy are able to find an opportunity to bond with Ryan, who's in a haze after Taylor's doings. Meanwhile, Kaitlin takes the school mean girl down the best way she knows how -- a rager at the Roberts' house. Elsewhere, Julie finds that Newmatch is more than a dating service and the truth about Che is finally exposed.

Taylor, after learning about Ryan's insomnia, comes up with her own therapeutic remedy to help him sleep. At Brown, Summer and Che step up their activism and their actions lead to more freedom than they had imagined. Meanwhile, Kaitlin helps Julie save the dating service and Taylor is forced to turn to Kaitlin for help with Ryan when her plan backfires.

Summer tries to return to the popular, gossipy girl that she was in high school, but finds that her time at Brown may have changed who she is forever. Despite her changes, Seth continues to support the new Summer. Meanwhile, Ryan helps Taylor out of a predicament and Julie and Kaitlin try to stay out of trouble, but find it hard to do.

It's Thanksgiving in the O.C. as the Cohen family continues to deal with the happenings in Mexico. Sandy is able to cut a deal to help Volchok, but ends up letting Ryan intervene, allowing him to settle the score. At Brown, as Summer packs up to come back to Seth and the new Roberts family, she wonders if she'll be able to deal with Newport. Meanwhile, Julie has trouble dealing with both Kaitlin Dr. Roberts, leading her to spend most of her Thanksgiving alone.

Ryan and Seth leave the O.C. to go south of the border, each to find something they're looking for -- Ryan searches for Volchok in order to deal with his emotions and Seth has an encounter with the U.S. Marines. Meanwhile, Julie and Kaitlin are forced by the Dean to work together on the Harbor school clothing drive and Julie is shut out by the Cohens when they discover what she's up to. Elsewhere, Taylor springs a surprise visit on Summer who continues to distance herself from California.

As the gang all continue to deal with Marissa's death, they all begin to adjust to life after high school. At Brown, Summer has re-invented herself into an environmental activist with help of her new friend, Che. Ryan has moved out of the Cohen household and continues to cope Marissa's death, which he took the hardest of all. But when Ryan misses a dinner at the Cohens, Seth finds Ryan slipping back to his old ways and calls Summer for help. Meanwhile, Julie finds it hard to deal with her daughter's death; Kaitlin uses the Cooper charm to get a new pair of boots; and Taylor tries to avoid everyone in order to hide the fact that she's not in Paris.

With senior year drawing to a close, graduation looms in the future, bringing the anticipation of college along with it. Seth, Ryan, Summer and Marissa together reflect on their past 3 years together and the major events that brought them all together. Seth has to deal with his parents and the police over his list of mistakes. Ryan's mother arrives in Newport with a surprise for him. Marissa is faced with a decision about her future after receiving a shocking proposal. Lastly, Summer has to face leaving Newport without Seth and has a hard time saying her goodbyes. Meanwhile, Sandy's big decision shocks Kirsten; Kaitlin returns home and moves in with Julie, wanting to be the next Cooper to attend Harbor; and Taylor is ecstatic when the "core four" turns into the "fab five". But as everyone makes plans for their futures, their pasts might get in the way of their dreams.

After the fallout of Prom, Ryan and Volchok make a deal with each other. Sandy is chosen "Man of the Year", but the district attorney digs deeper into Sandy's involvement in the building of the new hospital. Meanwhile, Marissa visits Kaitlin at her boarding school; and back in Newport, Theresa is forced to make a difficult decision and Seth's actions cause more trouble than good.

With Senior Prom in full swing, the good side, as well as the bad, comes out in everyone. Taylor hits an all-time high in her life, while Summer hits bottom with her prom date. Seth, with the help of Anna, devises a plan to win Summer back. Meanwhile, Volchok escorts Marissa to prom, and Ryan brings an unexpected girl from the past. Later, one of the girls is crowned Prom Queen, but the event is overshadowed when Ryan lapses back into his own ways when the Prom funds go missing.

As graduation rapidly approaches, Summer, Seth, Ryan and Marissa head to their Pre-orientations: Summer and Seth at Brown, and Ryan and Marissa at UC Berkeley. Kirsten is shocked to see a person from Ryan's past while dropping the boys off at the airport. Later, Seth runs into an old friend while at Brown, threatening his relationship with Summer. Meanwhile, Kirsten begins to relapse back into her old ways.

Ryan decides to visit his mother, but before he is able to do so, the advances of her co-worker delays him. In Newport, Taylor and Summer team up to figure out what Seth is hiding, but Summer is hurt in the process when their plan backfires. Meanwhile, Julie confronts Volchok in order to give him advice, and Marissa confronts Volchok's friends in order to get a girl out of a potentially bad situation. Sandy is able to fix the problems with Matt, but ends up neglecting Kirsten in the process.

When the gang receives their college acceptance and rejection letters, everyone must decide which path they want to take. Sandy and Kirsten become concerned about the decision that Ryan and Sadie come to. The letters lead Marissa and Summer work on patching up their friendship while Taylor decides to throw a College Sweatshirt Party to celebrate the letters arriving. Meanwhile, the toll that Sandy's job is taking on him begins to strain the Cohen household.

After Julie and Neil announce their engagement, the Coopers move into the Roberts household. But Marissa starts to break apart from Summer and the others when she begins to spend more time with Volchok and his friends. As Ryan tries to progress his relationship with Sadie he gets stalled when Seth voices his opinions on the Ryan/Marissa situation. Meanwhile, Kirsten gives Seth a surprise and Sandy's work frustrations continue to grow.

As Ryan and Sadie's budding relationship progresses, things start heading downhill when an old friend of Ryan's returns to Newport and Ryan decides to help her. Taylor tries to help Seth and Summer overcome their newest problem. Meanwhile, Marissa has to deal with being alone in Newport while Sandy deals with mounting business pressures.

After their falling out, Ryan debates whether or not he should invite Marissa to his 18th birthday party, while Sandy urges Ryan to invite one of his relatives. After months of putting it off, Neil and Julie finally tell the truth to Summer and Marissa, respectively. Meanwhile, Ryan and Sadie's relationship, as well as Marissa and Volchok's, continue to progress.

In order to get in contact with Johnny's father, Sadie and Ryan go on a road trip together to find him. Despite Ryan regressing back to his old ways, the road trip brings Sadie and Ryan even closer, putting Ryan and Marissa's relationship at risk. Meanwhile, new evidence implicates Marissa in Johnny's death and Seth and Summer find out the truth about what's going on between Julie and Neil.

A tragic event takes its toll on the community, Kaitlin prepares to go back to school, Ryan questions his relationship with Marissa after lending a helping hand to Sadie, and Kirsten and Julie decide to go ahead with a Valentine's Day party.

Summer finds out the truth about Seth's Brown interview, along with his other secret. Marissa admits her feelings to Johnny, but to cope with it, Johnny makes some bad decisions after drinking too much that endanger everyone around him. Meanwhile, Sandy and Matt hit a bump in their pending hospital project; Julie and Kirsten come up with a matchmaking plan to get Julie together with Neil Roberts, but when it backfires, Julie has to hide from him.

Marissa puts all her effort into trying to get to know her sister better, but Kaitlin's attitude only causes trouble between Marissa and the rest of the gang. Meanwhile, Sandy tries to give Seth advice about college, but Seth becomes increasingly stressed about leaving Newport and Kaitlin offers Seth something to ease his nerves. Also, Sandy and Matt land a deal for a new hospital, Kaitlin and Johnny start hanging out, and Julie continues to try to put her family back together.

Kaitlin Cooper returns to Newport from boarding school, bringing along her own share of secrets, attitude, and drama. She tries to reconnect with her family but is appalled by the trailer that her mother now lives in. Meanwhile, Kaitlin meets Johnny and makes sure that he knows she's available, especially since Marissa isn't.

Summer, Seth, and Ryan put together a plan to get Marissa back into Harbor. Johnny has to decide what's more important: Marissa's happiness or his feelings for her. Meanwhile, Julie Cooper and Dr. Roberts worry about telling their daughters the truth and Sandy has to make a moral decision that will change Marissa's future at Harbor.

In the spirit of Chrismukkah, the gang comes up with a plan to help Johnny -- a Chrismukkah Bar Mitz-vahkkah, involving Ryan getting Bar-Mitzvahkkahed. However, the holidays hit Summer hard when she begins missing her mother and Johnny decides to take his need into his own hands. Meanwhile, Kirsten, in the holiday spirit, reaches out to Julie.

Ryan begins working as an intern for Sandy and Matt, and ends up working to save Matt instead. Determined to both get accepted to Brown, Summer and Seth do what they can to stand out. Johnny admits his feelings to Marissa, and Ryan and Marissa end up telling each other the truth.

The seniors begin to prepare to apply for college and Summer, Seth, Ryan and Marissa begin to debate their futures. Marissa has a hard time deciding and ends up going to Johnny's surf competition instead of filling out applications. Meanwhile, Julie's financial situation forces her to return to her roots, and Sandy invites a friend from UC Berkeley to dinner with Seth and Ryan.

At The Subways' concert at The Bait Shop, Taylor's constant interference causes a rift between Summer and Seth. Marissa, worried about a confrontation between Ryan and Volchok, watches out for Ryan.
Meanwhile, Matt, Sandy's new partner goes beyond what's expected and Julie manages to outdo Charlotte.

Taylor, after falling for Seth, prevents Summer and Seth from being together at a Harbor event by locking Summer out. Meanwhile, Marissa's friendship with Johnny begins to worry Summer, leading Summer to get Ryan involved. Meanwhile, at the Newport Group, Sandy works on a plan to save the company, and Charlotte convinces Julie and Kirsten to get back into the Newport social scene.

Ryan makes a drastic, life-changing decision that Sandy, unlike everyone else, supports. Marissa, though not happy about his decision, turns to her new friends to help Ryan. As the Dean continues to try to ruin Ryan's future, Seth and Summer hatch a plan to expose the Dean's secret. Meanwhile, Charlotte makes Julie an offer she cannot refuse.

Marissa adjusts to her new school and begins making friends at Newport Union, while Ryan worries that their separation will affect their relationship. Seth's anger with the Dean gets Summer in trouble, but when Summer uncovers shocking information about Taylor, they might have a way to bring the Dean down. Meanwhile, Sandy finds himself determining the future of the Newport Group and Julie finds herself in less than ideal surroundings.

Despite finally working their relationship out, Marissa and Ryan are forced apart by their parents. Dean Hess pressures Seth and Summer into volunteering, which leads them to come up with a way to give Ryan and Marissa a night to remember. Their plan is a success, but it lands Seth and Summer in hot water with Taylor. Meanwhile, the contents of Caleb's will are revealed, shocking both Jimmy and Julie.

Kirsten continues to recover in rehab, and the Cohen men continue to feel the affects of her absence. Sandy tries to convince Kirsten to come home, but Kirsten's attachment to Charlotte prevents her, which raises Sandy's suspicions. At Harbor, Dean Hess makes a decision affecting Marissa's future while Summer faces off against Taylor Townsend when planning the Kick-Off Carnival. Meanwhile, Jimmy makes Julie a surprising proposal.

As Ryan, Marissa, Seth and Summer prepare for their senior year, Trey's shooting looms over them. Trey is clinging to life and when the cops continue to pressure the teens to admit who shot him, Ryan debates taking the blame to save Marissa. Meanwhile, Julie and Jimmy are determined to protect Marissa, no matter the cost, and Kirsten continues to recover in rehab with Charlotte, who is hiding her ulterior motives.

Sandy is forced to make a difficult, life-changing decision to save Kirsten and their marriage. Seth, Summer, Marissa, and Ryan are caught in the middle of a fight involving Trey at The Bait Shop, and when Ryan finds out what happened between Trey and Marissa, gunfire breaks out. Meanwhile, Jimmy, worried about Marissa and his family, returns to Newport.

Sandy and Caleb team up to confront Kirsten about her recent drinking problem. Ryan, determined to find out what happened between Trey and Marissa, heads to Chino for answers. Summer decides to not let Zach and Seth fighting over her ruin her prom, and forces the boys to choose who will escort her to the dance. Meanwhile, Julie and Caleb celebrate their final evening together before the divorce is finalized.

Now that Carter left Newport, Kirsten has started drinking more than usual, and refuses to admit to Sandy that she has a problem. Ryan begins to suspect that something happened between Trey and Marissa, but isn't sure what occurred. Summer confronts Reed about Seth and Zach's graphic novel, and ends up making an appearance at the "Atomic County" launch party. Meanwhile, Caleb confronts Julie about her past indiscretions.

Sandy, Seth and Ryan travel to South Beach for a visit with the Nana, who is now living in Miami Beach. While playing shuffleboard, Seth and Ryan meet a girl who gets Seth on stage for "Music Video Nation's" Spring Break broadcast. Seth gets himself in hot water when Summer sees Seth with another girl on TV. Meanwhile, Carter decides to leave Newport Living and Trey reads too much into Marissa's friendship.

In the aftermath of the rager, Sandy, Ryan and Seth go undercover to save Trey from jail time. Kirsten and Carter take a trip to wine country for wine sampling, and they become increasingly close. Meanwhile, Caleb returns from his Europe trip and ignores Julie's advances.

As Trey's birthday rolls around, Marissa throws him a party, which quickly escalates into a dangerous rager. Sandy and Carter go surfing together, and after meeting a girl on the beach, they decide to double-date. Summer uncovers Reed's true identity, getting Seth in trouble. Meanwhile, Julie leaves town due to her recent embarrassment, but ends up coming home and reconnecting with an old friend.

Sandy agrees to be the honorary chair for the Newport Beach charity yard sale and enlists help from Trey. But when the most expensive item at the sale goes missing, Ryan and Seth set out to retrieve it. Meanwhile, Trey looks for somewhere more permanent to live and the Cohens get yet another house guest.

When Ryan's brother comes to visit, Ryan has a feeling that it won't turn out well, but the Cohens gladly welcome Trey into their household. Marissa and Ryan continue to build on their new friendship while Seth and Summer deal with unexpected news. Meanwhile, Julie tells Kirsten about her past indiscretions then turns to Caleb for help.

Seth sets out on a mission to bring back the fun that the gang had last year, and won't stop until his plan is a success. Alex becomes jealous when Marissa asks Ryan for help for an upcoming school bonfire. Meanwhile, Kirsten has to talk Carter in to staying with the magazine and Sandy helps Julie with her blackmailer problem.

Marissa begins to see the reality of living on her own, and takes a break from the housework to go to the mall with Summer, Seth, and Ryan. While waiting the arrival of Carter, the new editor for Newport Living, Julie is distracted when a man from her past resurfaces. Meanwhile, Sandy and Caleb find themselves bonding over their experiences.

It's raining in Newport, and the rain begins to have its affect on the O.C. Marissa tells Julie about her relationship with Alex, then informs Julie that she's moving in with Alex. Summer gets ready for her trip to Italy with Zach, but she has a hard time forgetting about Seth. After persuasion from Ryan, Lindsay agrees to take the paternity test and everyone awaits the results. Meanwhile, after the highway is closed due to rain, Sandy and Rebecca are stranded together in a motel.

While Rebecca is mourning the death of her father, Kirsten becomes increasingly impatient with Sandy's absence, leading her to visit Rebecca. Meanwhile, Marissa hangs out with Alex's friends and Caleb seeks proof that Lindsay is his daughter.

Sandy attempts to make up for hiding Rebecca's return from Kirsten by planning a romantic Valentine's Day. Zach, Seth and Summer travel to San Diego to meet with a company about their comic book, but Seth focuses more on getting Summer back then pitching the comic book. Meanwhile, Julie returns from her vacation determined to reconnect with Marissa, and Ryan and Lindsay try to spend Valentine's Day together, but her relationship with Caleb interferes.

Summer takes a more active role in Seth and Zach's comic book, which makes Seth uncomfortable since he'll now be forced to spend time alone with her. Sandy and Rebecca talk about their past together and Kirsten talks to Caleb about him having a relationship with Lindsay. Later, Caleb decides what kind of relationship he wants with both of his daughters, and Alex confronts Marissa about where their relationship is headed.

Zach and Seth launch their own comic book series based on their lives. During their initial sketches, Summer finds that she's being excluded from the book and asks the boys why. Sandy agrees to help an old friend find his long-lost daughter, but the search only raises questions. Meanwhile, Marissa rebels against Caleb; and Ryan agrees to help Lindsay find out more about Caleb.

Marissa and Summer plan a girls' night out and decide to invite Lindsay to go out with them. While the girls are out, Ryan, Seth, and Zach spend the evening playing video games, but have a hard time not joining the girls. Meanwhile, Julie and Kirsten brainstorm ideas to help the Newport Group's image while Sandy and Caleb try to talk them out of their idea.

Lindsay and Ryan struggle to define their relationship: Is Lindsay technically Ryan's aunt or is it okay for her to be his girlfriend? Meanwhile, Summer's meeting with Zach's family goes horribly, as does Sandy and Kirsten's anniversary until Sandy finds a way to come through at the end. Marissa deals with being alone when D.J. leaves Newport.

The Cohens decide to welcome Lindsay into the family after Caleb's secret was revealed. Another family is shattered when news is revealed that one of them is leaving Newport. Meanwhile, Seth attempts to be a "bad boy" to impress Alex.

Everyone is invited to the annual Chrismukkah celebration at the Cohens, but Seth's holiday is tested when secrets are exposed that may change everyone's life forever. Meanwhile, Summer hatches a plan to save Chrismukkah.

With the arrival of winter, Seth, Ryan, Summer and Marissa find themselves planning for the annual "SnO.C.Winter Ball". Julie and Jimmy continue spending time together and getting along surprisingly well. Meanwhile, Sandy comes closer to finding the truth about Caleb's secret and Julie uncovers what Marissa has been hiding.

Ryan and Seth go on an awkward double date at a Killers' concert, and end up leaving with someone other than who they came with. Meanwhile, Julie finds her new position at the Newport Group harder than she expected and turns to Kirsten for relief.

Seth, with the help of Alex, tries to prove that he's different that what everyone thinks of him. Summer debates her feelings for Seth now that Zach has entered the picture. Marissa and Ryan try to mend their relationship, but when Ryan meets Lindsay, it makes things a little harder. Meanwhile, Caleb's legal troubles may leave both Sandy and Kirsten unemployed and Julie plans her course of action if Caleb is taken into custody.

During the first day of school for the gang, Seth and Ryan continue to try to win back the affection of Summer and Marissa. Hailey informs Jimmy about her decision to move away from Newport and Jimmy makes a drastic decision in order to stay with her. Meanwhile, Sandy explains Caleb's legal troubles to Julie, who proceeds to threaten Sandy.

With summer drawing to an end, tensions begin to rise. Seth continues to be stubborn in his decision to not return home from Oregon where he spent the summer. In Chino, Ryan continues to work his construction job while living with a pregnant Theresa and missing what he left behind. Back in Newport, Summer deals with Seth's disappearance and Marissa continues to distance herself from her new life, finding comfort in her old habits.

Julie and Caleb's wedding day arrives, and becomes a life-changing day for more than the newlyweds. As the vows are said and the couple is pronounced husband and wife, events unfold that change the lives of several people forever.

Seth, Ryan, Sandy, and Caleb head to Las Vegas for Caleb's bachelor party. Meanwhile, back in Newport, Kirsten throws together a bachelorette party for Julie. Marissa and Theresa begin spending time together, and Marissa learns more about Theresa than she bargained for.

Now that Julie's engaged to Caleb, a reluctant Marissa and Kirsten throw her a bridal shower. Theresa returns to Newport and the reason for her return turns Ryan's life upside down. Meanwhile, Seth meets Summer's father, but the meeting is a disaster for both of them.

After finding out about their affair, Marissa refuses to hear any explanation from either her mother or Luke. Luke, feeling depressed, drinks too much and gets into a near fatal accident. Only then does Ryan and Marissa agree to listen to Luke. Meanwhile, prior to the opening of The Lighthouse, Jimmy and Sandy get learn that they were denied their liquor license. Now, Sandy must decide between getting the license or keeping Jimmy as a partner. Later, Caleb uses the restaurant opening to ask Julie an important and surprising question.

When Sandy finds out that his mother is coming for a visit, the Cohens have to prepare for a Passover dinner with "the Nana". Summer, wanting to get on the Nana's good side, decides to do some preparing as well. But when the Nana arrives, her news shocks the Cohens. Meanwhile, when Marissa goes missing, Ryan heads out to track her down, and finds her hiding in the last place he expected.

Marissa and Summer decide to take a trip to Los Angeles, and Seth, worried Summer will have fun without him, invites himself to go with. Ryan decides to tag along as well in order to make sure that Marissa doesn't find out about her mother's affair with Luke. Meanwhile, Sandy and Jimmy find themselves in a bind.

After Theresa decides to stay and Newport, Ryan helps her find a job and a place to stay. Julie and Luke's affair is almost exposed when Jimmy sees them together. Meanwhile, Anna decides to move back to Pittsburgh and Seth convinces himself that she's leaving because of him, causing him to rush to the airport in order to stop her.

Ryan and Marissa decide to start over as friends, but it proves to be a hard task when Ryan begins to spend more time with Theresa. Privately, Seth and Summer's relationship is going good, but in public, Summer hides the fact that she's with Seth. Seeing this, Seth decides he has to teach Summer a lesson. Meanwhile, Jimmy begins to be suspicious of Julie and Luke; Ryan learns why Theresa is in Newport; and Sandy finds himself involved in another mess Caleb created.

Marissa tries to get her relationship with Ryan back on track, but Ryan is reluctant to forgive her about the situations surrounding Oliver. Things become harder for Marissa when Theresa, Ryan's ex-girlfriend from Chino, comes to Newport to cater the Valentine's Day dance. Meanwhile, Seth and Summer take their friendship to a new level and Jimmy learns that he has a secret admirer living in the Cohen house.

Caleb drops responsibility of the company in Kirsten's lap and forces her to fire Julie. Kirsten also faces stress at home when she and Sandy begin to question if they did the right thing by bringing Ryan into their household. Meanwhile, Ryan and Luke team up to bring Oliver down, resulting in a potentially deadly showdown when the truth is revealed to Marissa.

Sandy and Jimmy take the first step in going into business by buying the Lighthouse restaurant. Kirsten has a tough time at work when Julie is hired as a designer for the Newport Group. Despite being with Anna, Seth becomes jealous when he sees Summer and her boyfriend together. Meanwhile, Ryan risks his enrollment at Harbor to expose the truth about Oliver.

Ryan, Seth, Marissa, Anna, Luke and Summer are invited to spend a weekend with Oliver at his parent's luxury home in Palm Springs. Oliver quickly gets on Ryan's nerves when he begins to flirt with Marissa and making sure that Marissa and Ryan get no time to be alone together. Summer does all she can to annoy and come between Seth and Anna, but refuses to admit her feelings for Seth. The weekend takes a turn for the worst when Oliver leaves and later calls Marissa to tell her he's taken a handful of pills. Back in Newport, Kirsten talks to her father about Hailey's problems and Sandy and Jimmy decide to go into business together.

Hailey moves in with the Cohens, and proves to be a difficult house guest. Kirsten is unable to confront Hailey about her problematic tendencies, so Sandy takes things into his own hands. Meanwhile, Seth and Anna have a hard time telling Summer about their new relationship and Ryan becomes increasingly jealous about Marissa spending all of her time with Oliver. But when Oliver is arrested at a concert for trying to buy drugs, Ryan is able to enlist the legal help of Sandy.

Things are bound to go wrong when Kirsten's rebellious sister, Hailey, returns to Newport. Ryan and Marissa decide to spend New Year's watching movies together, but when Marissa is invited to Oliver's party, she decides to go to the party instead. Hailey gets Kirsten and Sandy to go to a party, which ends up to much more than they bargained for, and in their absence, Hailey throws a raging party for her friends. As the clock ticks down, Ryan rushes across town to be with Marissa when the clock strikes midnight.

Seth, staying true to his unique self, created his own holiday by combining Hanukkah and Christmas into Chrismukkah. And this Chrismukkah will be one to remember as Anna and Summer force Seth to choose between them. Ryan is reluctant to celebrate due family problems during past holidays, but ends up helping Marissa, who as turned to alcohol, cope with her own family issues. Meanwhile, Kirsten tries to take her first vacation in years while Sandy continues to work on the case against Caleb's company.

In the aftermath of Thanksgiving, Anna and Summer are still angry at the way Seth treated both of them and Seth continues to try to make things right. Caleb and Julie's brief relationship is ended when Julie wants a commitment, but Caleb isn't ready to do so. Meanwhile, Ryan and Luke settle their differences when a secret is exposed, and Sandy learns what Kirsten is hiding from him when he meets with Jimmy to work through is legal troubles.

It's Thanksgiving in the OC, and Seth is forced between Summer and Anna, but the process lands Seth in hot water. Meanwhile, Ryan, accompanied by Marissa, travel to Chino to visit Trey, and their quick trip infuriates Julie. When they return, the mounting tensions explode, making it an OC-style Thanksgiving to remember.

Now that Marissa and Ryan are officially a couple, they decide to take things slowly. When Seth and Anna begin to get closer, Summer has a hard time hiding her true feelings for Seth. Tensions between Sandy and Kirsten continue to grow as Sandy continues to work on the case against Caleb. Trying to patch things up with Marissa, Julie invites Marissa, Ryan and Jimmy to her charity event. But their fragile relationship falls apart when a surprise couple is revealed.

During the first day of school, Summer continues to ignore Seth while in public, but privately she's jealous of his budding relationship with Anna. Kirsten also feels jealous when Sandy spends long hours at the office with Rachel, and things are made worse when Sandy is assigned to a case against Caleb. Luke continues to try to get Marissa back, but his attempts make Ryan jealous, resulting in a fistfight between the two. Later, Ryan tries to make up for the fight when he gets Marissa alone with him on a Ferris wheel.

With Marissa in the hospital after her overdose, Julie takes her anger out and puts the blame on Ryan. Despite threats from Julie and the risk of losing his spot at Harbor, Ryan does all he can to make sure Marissa isn't sent to San Diego for treatment. Meanwhile, Sandy adjusts to his new job and his friendliness towards Rachel, a co-worker, raises Kirsten's suspicions.

With summer break drawing to a close, Seth is able to convince Ryan to plan a trip to Tijuana, and Summer convinces Marissa to come along as well. But the trip runs into disaster when Seth drives off the road, which damages the vehicle. While the car is repaired, the foursome has no choice but to stay in a grungy motel. When they finally make it to Tijuana, Marissa is devastated to find Luke with another girl, but Ryan is there to comfort her. Back in Newport, Jimmy and Julie finalize their divorce and Jimmy moves out. While helping Jimmy paint his new apartment, Kirsten's old feelings for Jimmy resurface.

Kristen nervously prepares for her father, Caleb's, birthday party, and is thrown off when she meets his new girlfriend, Gabrielle. After constant criticism from Caleb about Ryan, the Newport Group, and his party, Sandy suggests to Kirsten that they move away from this life and return to the life they had before moving to Newport. Later, Caleb turns Jimmy down for a job, but becomes increasingly interested in Julie. Meanwhile, Seth's years of dreaming finally become a reality when he and Summer share their first kiss, and Ryan has to fend off Gabrielle's advances.

Ryan, wanting to not be as dependent on the Cohens, gets a job at the Crab Shack. There he meets Donnie, and due to their similar backgrounds, they strike up a friendship. But worlds collide when Donnie invites Seth and Ryan to a party. Later, Ryan finally gets the courage to ask out Marissa and Sandy offers Jimmy legal help.

After the events of Casino Night, Kirsten and Sandy decide to become Ryan's legal guardian and Ryan officially becomes a part of the Cohen family. For the upcoming Cotillion, Ryan is paired up with Anna, and Summer, much to her dismay, is paired up with Seth. After rehearsal, the kids all go to a pre-Cotillion beach party, but much like the first beach party, Seth and Ryan are thrown into an unwelcoming crowd. This time, however, Ryan is able to resist fighting Luke. Meanwhile, Sandy learns that Jimmy's $100,000 loan from Kirsten has put her into Jimmy's fraud investigation, and the community's anger towards Jimmy's fraud hits its end during Cotillion.

Sandy once again represents Ryan, but this time for the arrest following the model home fire. After his release, Ryan searches for his mother, and once she's found, Ryan agrees to give her a second chance. However, when Dawn accompanies the Cohens and Ryan to a Casino Night, Dawn drinks heavily and Kirsten sees how unfit Dawn is in being a mother to Ryan. Meanwhile, both Sandy and Julie find out that Kirsten lent Jimmy $100,000 to help him with his debt, resulting in an argument between Sandy and Julie.

Thinking that he'll be put into foster care, Ryan attempts runs away from the Cohens, but is stopped when Seth figures out his plan. However, Seth doesn't want to lose his only friend, so he hatches a plan to keep Ryan in Newport. Seth, with the help of Marissa, hides Ryan in an unfinished home in Kirsten's newest housing development. However, Luke and his friends discover the plan, resulting in a bloody brawl between Ryan and Luke. Meanwhile, Sandy and Kirsten find Ryan missing, resulting in more arguments about Sandy having Ryan stay with them.

Ryan Atwood is a troubled teen who finds himself in even more trouble when his older brother, Trey, bullies him into participating in a car theft late one night in their hometown of Chino, California. The boys don't get far with the car as they crash it and are arrested. Trey is sentenced to three years in prison, but seeing as Ryan is under eighteen, he is set free under the supervision of the public defender, Sandy Cohen. After Ryan is thrown out by his mother, he finds himself homeless with nowhere to turn. He calls Sandy, who without hesitation, takes Ryan in, and out, to his cushy home in Newport Beach, California.