Gilligan discovers a jungle boy living on the island. He shows them a hole in the ground that causes objects to float, and the professor theorizes that it is expelling either helium or hydrogen. He immediately sets to work building a large balloon, with the hopes of carrying one of them back to civilization.

Mrs. Howell decides to form a symphony orchestra, to make up for the lack of culture on the island. Gilligan's drum beats, as they drift across the water, hold special meaning to angry natives on a nearby island.

The Castaways discover a trunk belonging to a magician. They use a magician's props to scare away unfriendly natives from nearby islands.

A NASA satellite with a TV camera, accidentally lands on the island instead of the intended target: Mars. The castaways try to communicate their S.O.S. when the camera is operational. However, with the help of a Gilligan goof-up, the castaways are covered with glue and feathers, and the NASA scientists mistakenly believe they are seeing the first proof of life on Mars.