Zack stays over at Screech's place for the weekend where the two of them along with Slater throw a party which is interrupted by the girls before breaking off a valuable item from Mrs. Powers.

The gang is forced to choose between supporting Kelly's relationship with Jeff and helping Zack cope with his grief over their break up, while Lisa plans her sweet sixteen party.

It's the annual chess competition between Valley and Bayside. Screech is the head champion but Valley decides to get some dirt on Screech.

Zack begins dating a college girl named Danielle, and asks Screech to make fake IDs in order that they can hang out with her at a club. However, things become complicated when the guys see Kelly's boyfriend, Jeff, there with another girl.

It's the last day at the beach resort. Zack and Stacey are hoping to have one last time together, but Mr. Carosi doesn't approve of their romance. Meanwhile, a secret admirer is sending Slater some love letters.

The gang travel to Palm Desert for Jessie's father's wedding. His job as manager of a luxury hotel there guarantees them wonderful accommodation, but Jessie takes an immediate dislike to her father's much younger bride.

The gang wins a mystery weekend at a mansion where they are all part of a murder mystery.

A.C. and his father fight over where he should attend college and Zack tries to fix it. Jessie becomes a cheerleader and worries about college acceptances.

The gang learn about the dangers of drinking and driving when, after getting drunk at a party, they get into an accident in Lisa's mother's car and try to cover it up.

Zack appears to have negotiated a great deal on class rings for the senior class, but it turns out he has been scammed. While he plots revenge, a misguided bet between Tori and Lisa leads to Screech falling for Tori.

The gang decide to make a video version of the annual yearbook, but Zack has other ideas and decides to use it to sell a dating video made from the video clips. However, he regrets his decision after Screech mistakenly puts Kelly on the video and she starts getting calls from other guys.