The Harlem Globetrotters' chartered plane crash lands on the atoll inhabited by the happily marooned Gilligan and fellow castaways, and they all must play basketball against a specially programmed squad of robots controlled by a mad scientist.

When a decaying Russian satellite crashes on the island, the Professor uses a key component for a barometer. With that device, he learns that a massive wave is going to swamp the island. In desperation, the castaways lash their huts together into one structure in order to have any chance to ride the disaster out.

A campy look at the making of the 1964-67 TV series, as told by stars Bob Denver, Dawn Wells and Russell Johnson, as well as in flashbacks (actors play the castaways). Bob/Gilligan: Jon Wellner. Dawn/Mary Ann: Samantha Harris. Tina/Ginger: Kristen Dalton. Alan/Skipper: Eric Allan Kramer. Russell/Professor: Michael Wiseman. Jim/Mr. Howell: Steve Vinovich. Natalie/Mrs. Howell: E.J. Peaker. Sherwood Schwartz: Aaron Lustig.

The slapstick adventures of hapless Gilligan, long-suffering Skipper and their gang of mismatched castaways, all stranded on an uncharted desert isle after their tiny ship hit stormy weather.