Alex and Dave's wedding was supposed to be the happiest day of their lives, for them and their long-time friends, until Alex leaves groom-to-be Dave at the altar.

Dave gets stuck in a new relationship, and Alex looks for a new roommate.

Jane insists that she and Brad befriend a sophisticated couple, Dianne and Carl, but Brad resists the idea.

The gang tries to get max to come out, and Penny dates a great guy with just one little issue.

Brad's uptight father gets a new lease on life, but can he adjust to the change?

Brad tries fixing Max up, while Penny and Jane take a self-defence class. Dave longs for his nice old apartment.

Dave worries that he's leading a zombie-like existence, while Max and Jane square off in some silly zombie challenges.

Alex and Dave's his-and-hers tattoos come back to haunt them.

Dave's old high school teacher turns up, and Max finally meets a great guy.

Alex drives Penny crazy with her endless girls' night out, and Dave and Max seek vengeance for the wedding fiasco.

The gang goes to a concert, but their big night out hits some sour notes.

The gang gears up for another wedding - will it be as big a disaster as the last one they went to?