A blizzard strands the roommates during the Thanksgiving holiday and everyone pitches in to help Alex have the big dinner she dreamed of.

Charlie and Jack's 18-year-old brother visits and falls for Lindsay. The two decide to elope to Las Vegas and the roommates go after them.

After several practical jokes the roommates agree to a truce. When Alex and Kate find a burglar in the living room they believe it is the guys' final attempt at game-playing and treat the man as a guest. When Charlie and Jack come home they tell the burglar is real and the four hold him until the police arrive.

Having Nick with them severely cramps the carefree lifestyle of Kate and the other roommates. Kate and Nick move into a dreary apartment. The roommates convert the attic into a room for Nick and all five are together again.

Jack's former girlfriend Wendy visits and he insists Charlie escort her around town. Charlie is thrilled when he meets the now-stunning Wendy. Jack realizes that just this once he can put aside his ego and be glad his brother is having a good time. Nick earns Sam's respect by not cheating on a test.

Nick is excited to see his favorite band, who is performing in town. Kate promised that she would take him, but later breaks her promise when she finds out that everyone has to camp in line to get tickets.

An upset Nick then sneaks out to go camp-out. Kate, Alex, Charlie, and Jack go to take Nick home, but decide to stay in line and camp out the night once they are down there.

Jack and Charlie take Nick and Sam's nature scout group on a camping weekend, but their inexperience with the nature scouts causes them to end up lost in the wildnerness.

Nick stands up for Sam after the boys in the scout group tease Sam for being a nerd. But Sam's intelligence saves them, as he leads the boys to civilization.

Meanwhile, Kate & Alex win $10,000 on a radio quiz show, but are later disqualified because they are indirect employees of the radio station.