In the middle of an argument with Cameron, Colleen is rushed to the hospital with chest pains. Fearing she's had a heart attack, the family rushes to be by her side... with Cameron feeling especially guilty that the stress of their fight brought it on.
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.