Bat inherits a casino from an old enemy and soon discovers why. Upon arriving in town, he learns that the casino is $3000 behind in its mortgage payments and the previous owner was killed by the town marshal who owns the mortgage.

Bat is hired to serve as a bodyguard at Wyatt Earp's El Paso casino, but the two of them can't prevent a robbery which costs Wyatt Earp $13,000 as he won't bank his money. The robbers use a costly shirt as a gift to distract Bat.