 Fred borrows money from Mr.Slate to spend a good long weekend with the family. He spends the money for a new hammock and gets Wilma a giant backyard rotisserie. However, while playing croquet, Barney shows Fred a magazine talking about the future. Doubtful about this future, the Great Gazoo invites Fred, Barney and the wives to a trip to the 25st Century. What they see is unbelievable, from a trip to the Moon to an encounter with a direct descendant of Mr.Slate s !