The time has finally come when Zack Morris and Kelly Kapowski get married. It starts off with Zack, Slater, and Screech driving around town and visit Bayside High School.
When Zack's back home having dinner, his parents keep convincing him that he's too young to get married. The next day, Zack, Slater, Screech, Kelly, and Lisa meet in Zack's driveway, getting ready to hit the road to Las Vegas.
When they're halfway to Las Vegas, Lisa's car gets busted, so she and Kelly are stuck in the middle of no where until Kirt Martin walks by and helps the girls out with Lisa's car and Kelly decides to invite him to Las Vegas with them.
Meanwhile, Zack, Slater, and Screech get stopped for speeding, but Slater lost his registration, so the sheriff accused them of steeling Slater's car, but Slater tries to tell the sheriff that it's his car, but he wont believe him, so now Zack, Slater, and Screech are stuck in jail.