Couple's Retreat, starring Vince Vaughn, Jon Favreau and Kristen Davis, is a movie about four couples who take a trip to an island resort. One of the couples convinces the other three to go with them to get a group discount. The other three couples are looking forward to spending time lounging on the beach, eating great food and having a fun, relaxing vacation. However, when they arrive at the resort, they learn that the couple's therapy portion is not optional, and their days are pretty much planned for them.
Each couple, besides the first one, is in denial that they are in need of any therapy. However, it soon becomes apparent that each relationship does have its problems. One couple, Joey and Lucy, are very good at pretending to have a loving relationship when in front of others. It soon becomes apparent that they can barely stand each other, claiming they only got married because Lucy became pregnant at the end of senior year in high school.
Another couple, Dave and Ronnie, also claim their marriage is fine. After a session with the therapist, they realize that maybe they might have a couple of issues to work on as well.
The other couple consists of Shane and Trudy. Trudy is about half Shane's age, and it is apparent that Shane is going through a mid-life crisis after he and his wife separated.
After too much together time and therapy, Trudy leaves Shane to head for the other section of the island, where the singles resort is located. The other couples decide they must go to bring her back. On their way, arguments arise, and they wind up getting separated from each other. On the singles side, they have a chance to mix it up with people besides their spouse. Shane bumps into someone unexpected.
After their wild night, the couples are reunited for their last therapy session. Will all of them survive the Couple's Retreat?