Zack and Kelly make plans for their wedding. Lisa, Leslie and Alex fight to be the maid of honor, and Zack chooses Screech as his best man, because Slater thinks the wedding is a bad idea.
Kelly is accepted to the Semester on the Sea program, which involves a three-month cruise. Zack doesn't want Kelly to go, but she feels it's an opportunity she can't pass up. Zack has a dream that Kelly is with another guy and asks her to marry him.
The gang is shocked by the death of a popular teacher. Meanwhile Zack takes desperate risks to get Kelly to say that she still loves him.
Zack gets a job at the health center to get close to Kelly. Unfortunately, Professor Lasky winds up there as well.
Zack and Slater have a rave to try and raise money so they can take Alex and Kelly to Cancun.
In an Ethics course with a tough Professor, someone drops a midterm paper which Zack picks up and reads. Leslie takes it off him and tears it up.
Although he is jealous, Zack reluctantly agrees to help Kelly and Professor Lasky keep their relationship secret.
Since Kelly fancies Professor Lasky, she goes to his office to supposedly discuss a paper she has written. She finds him there with his child and offers to baby-sit.
The gang has plans to go home for Thanksgiving. When Thanksgiving plans fall apart, the gang "helps" Rogers prepare a meal for underprivileged kids.
Kelly is thinking about becoming a doctor. Zack discourages her, and Kelly begins to give up her dream.
Zack begins dating a tennis star, Linda. He is at least partly intrigued by her fame. She is struggling with astronomy so Zack gets Screech to tutor her.
Zack poses as his anthropology professor, Professor Lasky. The girls and Mr. Rogers want to get a big screen television. So they come up with fundraising ideas. Mike wants to sell candy bars for $0.10 profit per candy bar and the girls want to have a Men of Cal U calendar.
Zack and the guys have been playing poker at another classmate's dorm. Zack wants to have the Poker Game at their dorm. There is only one problem to this. And it is a big problem - Mike.
It's Homecoming at Cal U!
Zack and Slater's friendship is challenged when Slater chooses not go on a ski trip with Zack and Leslie.
It's rush week at California University, who will get in and who will be left out? Zack wants to be in the same fraternity as Slater but when they're not too interested in him, Zack comes up with a scheme to get in.
Look out California U...here come Zack, Slater, Screech and Kelly! Now the gang from Bayside High is leaving home and heading to the exciting campus of California University for four years of new challenges, new faces and wild, new adventures.