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.

A real life drama concerning a brother, his three sisters, and their hugely successful manure business. Perfect fare for the early 80's as the kids rake in the dough and show where a little entrepeneurship can take you. However the movie moves slowly and becomes very complicated when KIDCO runs afoul of the IRS. It's here most likely where the target audience of children will find themselves lost as tax codes, etc are reviewed ad nauseum. This movie was filmed in 1982, but was shelved until being released in 1984.