Due to Lisa's parents pulling some strings, the gang land summer jobs at Malibu Sands beach club, but Zack soon clashes with the owner Leon Carosi, and his initially abrasive daughter, Stacey.
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.
After discovering that the vintage Mustang he wants to buy belongs to Mr. Carosi, Zack convinces him to lower the price by claiming that the gang can win the annual beach volleyball match, though their chances of victory seem slim at best.
Malibu Sands is preparing to hold the annual Miss Liberty beauty pageant, and Zack, one of the judges, is pressured by Mr. Carosi to rig the competition in Stacey's favor.
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.
Stacey is left in charge of the beach club in Mr. Carosi's absence, and things soon turn chaotic when two different parties are double booked in the same room and the kitchen staff goes on strike.
The gang is overjoyed when oil is found in Bayside's football field, and they dream of being rich. However, they soon realize that everything has a price.
The gang's last weekend at Malibu Sands proves bittersweet, with Zack and Stacey reluctant to part from each other, and the rest of the gang preparing to head home.
After Lisa and Eric crash Mr. Belding's car, Zack and the boys must find a way to repair the car before Belding returns; meanwhile, Jessie still disapproves of Eric hanging out with Lisa.
In an attempt to raise money for new cheerleading uniforms, Bayside holds a date auction. Zack's plan to go with a girl he finds attractive is ruined when Wendy, an overweight girl, wins him, and he tries desperately to get out of the date.
While in the mall to buy tickets to a concert, the gang find a bag containing $5,000. They decide to use it to buy as many tickets as possible and scalp them, but it appears the two men the money belongs to will do anything to get it back.
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.
As the wedding approaches, Jessie desperately tries to sabotage things, Zack and Kelly grow closer, Screech's quest for a date continues, and Slater attempts to impress Christina and her father.
When Kristy, a new student, is not allowed to join the wrestling team because of her gender, Zack and Jessie campaign for her to be given a chance. However, Jessie soon mistakenly becomes convinced that Kristy is interested in Slater.
A famous film star comes to Bayside to shoot an anti-drug public service announcement. The gang are enchanted by him, but when they go to a party at his house, they discover he is a hypocrite.
Zack falls asleep before band rehearsal and dreams of the gang's band, Zack Attack, achieving worldwide fame before succumbing to jealousy and infighting.
It is Cut Day at Bayside, a day on which students traditionally skip class. Zack wants to join in, but because one more absence will mean suspension for him, Mr. Belding is determined to keep an eye on him the entire day.
While Zack's Mom prepares to put on the mall's production of A Christmas Carol, the gang try to help the Bentons get back on their feet for the holidays after Laura is accused of stealing.
As part of Lisa's prize for winning a radio contest, the gang travel to a secluded mansion for a murder mystery weekend. However, things soon become sinister when it appears a real killer is on the loose.
