Ep 18. Sister III

Jess receives a call from her sister, Abby, who has just been dumped by her boyfriend and needs a place to stay. Despite Jess's hesitation, she agrees to let Abby stay with her and the guys for a few days. Meanwhile, Nick and Schmidt are at odds over who gets to have the master bedroom.

Abby's arrival quickly disrupts the balance in the loft. She is loud, intrusive, and insists on "helping" everyone with their problems. Jess tries to appease her sister by suggesting they do some bonding activities, but Abby's behavior only becomes more erratic as she hits up bars, brings home strange men, and becomes insistent on being the center of attention.

To make matters worse, Nick and Schmidt's feud over the room escalates to the point of physical violence. They try to hide their scuffle from Jess and Abby, but their efforts only lead to more chaos. At one point, Nick accuses Schmidt of being a bad friend and never supporting him, while Schmidt complains that Nick always takes him for granted.

As the tension in the loft builds, Jess realizes that Abby's behavior is just a reflection of her own insecurities and tendency to avoid confrontation. She decides to have a heart-to-heart talk with her sister, where they both express their fears about being alone and unloved. Abby apologizes for her behavior and promises to tone it down, while Jess confesses that she is afraid of being rejected by her friends.

Nick and Schmidt eventually reconcile and agree to share the master bedroom, decorating it with a mixture of both their styles. They also apologize for their behavior and acknowledge their flaws as roommates.

In the end, the loft returns to a state of normalcy, with Jess feeling more confident in her relationships and Abby thanking her sister for being there for her. The episode ends with a group hug and the realization that the loft is more than just a place to live, it's a family.