Bat Masterson roams the frontier and defends the innocent.

Bat makes an appeal to the governor to pardon a gunfighter because of his father's war service.

Bat becomes the only remaining witness for the prosecution in an upcoming murder trial in Wyoming as the father of the accused man either intimidates or kills anyone able to testify.

An old foe mysteriously bequeaths his casino to Bat; when Bat arrives in Shotgun Falls, Wyo., to claim the inheritance, he discovers he must deal with a crippling mortgage and a murderous marshal determined to take control of the property.

Gambler George Winston breaks the bank at Bat's casino using underhanded methods, and after pursuing Winston and his bodyguard, Burt Comers, Bat learns the men have an accomplice on the inside.