Kelly's grandpa invites the whole gang to his little hotel "The Hideaway" in Hawaii for summer vacation. They expect a marvelous time at the beach - without Belding. Upon arriving, they quickly learn that not only is Belding there, but they also have to help Kelly's grandpa from losing his hotel. Meanwhile Zack meets (again) the love of his life, Jessie and Slater bet with Lisa that they won't fight, and Screech gets kidnapped by the Pupuku clan.
Mark-Paul Gosselaar
as Zack Morris
Tiffani Thiessen
as Kelly Kapowski
Mario López
as A.C. Slater
Dustin Diamond
as Screech
Elizabeth Berkley
as Jessie Spano
Lark Voorhies
as Lisa Turtle
Dean Jones
as Harry Bannister
Dennis Haskins
as Mr. Belding
Rena Sofer
as Andrea Larson
Dan Gauthier
as Brian Hanson
Victor Brandt
as Charles Worthington
Blake Boyd
as Derek Worthington
