Return to the Planet of the Apes: Judy contacts Bill and Jeff from the land of the Underdwellers, asking for help. They need the laser drill from the spacecraft to save the underground city from a volcanic eruption, but the astronauts will only help in exchange for Judy's freedom.

Starring:

Austin Stoker, Claudette Nevins, Edwin Mills, Henry Corden, Richard Blackburn, Tom Williams

Genre:

Animation, Sci-Fi, Adventure