Beau Maverick stumbles onto the cave site meeting place of five outlaws. They were summoned by a bandit named Jess in order to plan a big job. Mavrick passes himself as the notorious Texas outlaw Red Dog. The outlaws become suspicious of Beau when he declines to join them in a $500,000 bank robbery scheme.

Cowardly George Parker (Alan Hewitt) offers Doc Holliday a tempting reward. All Doc has to do is kill his best friend - Bart.