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

The Baxters leap to safety but are captured, and brought to Murania; Gene is unable to help, as the door control is disabled; the Baxters switch the door control, but get hit by radium rays.

Wanting everyone off Radio Ranch, Beetson frames Gene.

The Queen orders Gene to tell her who saved him, but he refuses; after Gene sees the kids, he tells the Queen that it was Argo; the Queen is shocked, but forms an alliance with him and orders death to Argo.

A cowboy discovers an advanced civilization living under his ranch. (Chapter 1)