A singing cowboy stumbles across an ancient underground civilization beneath his ranch.

After defeating the guards, Gene reaches the surface and takes Beetson's airplane; the Queen kills the engine.

Wanting everyone off Radio Ranch, Beetson frames Gene.

In Murania, Lord Argo is planning a revolution while on the surface, Gene flees from the Sheriff in a car without brakes.

Gene is pulled to safety, and the Queen is rescued; the ray goes wild, destroying Murania; the Queen orders all to the surface, where everyone and the ranch are safe, while staying behind herself.