When Don and Sharon go away for the night to rekindle their romance, Jeff throws a house party. Concerned, Carrie calls her Uncle Cameron to put an end to it... but seeing it as an escape, he joins the fun and brings reluctant son Henry with him.
Cameron throws a 25th anniversary party for his mother, Colleen, and stepfather, Wendal, which threatens to be a disaster when Wendal confides to Cameron that he's thinking of leaving Colleen.
Colleen learns of Wendal's plan to leave her at their anniversary party, and after discovering that the entire family knew but her, confronts them at their traditional bowling night.