Marty and his wife and kids, and Jill's parents come to visit and Tim and Jill try to solve their marital problems. Tim tries to beat Doc Johnson in the Christmas lighting contest.

When Marty and Nancy are staying with the Taylors, Tim walks in on Nancy in the shower, thinking she is Jill. Meanwhile, Randy goes to a bar mitzvah and must come home after he splits his trousers.

Carrie, Jill's sister, comes to observe Jill's life to see if she would like to get married. Marty, Tim's brother, moves to Detroit.

Tim invites everyone over to the house for Jill's surprise birthday party, but Jill is off looking for her childhood piano.