In the second of three additional Gilligan's Island movies following the series, the gang finds a way of getting rescued from the "uncharted desert isle" for a second time through a series of misadventures but comes back to turn it into a tropical resort for uptight mainlanders.
A bat boy guides the San Diego Padres to the World Series with the secret help of his dad, a baseball has-been who now sells refreshments in the stands.
Mimi, a free spirited girl out shopping, is given a mysterious box by a dying man, who instructs her not to give it to his killers. While being chased by the thugs who killed him, she meets Howard, an uptight dental student, who enlists his private detective uncle to help them find out the truth...
