A weekend in Palm Springs goes awry when David invites Steve, Kelly and Donna to join him at his grandparents' house while they're away on a cruise–but he gets the dates confused, and they're still there.
It is the first day of school. The gang is back, and they are seniors! There is a new girl in school and both Zack and Slater fall for her. They start vying for her affections. The "friendly" competition escalates to an all out fight among the two boys. Who will she choose?
