 Overland mail riders Jack Mason (Jack Randall) and his pal, Porchy (Vince Barnett), learn that an Indian uprising is imminent because one of the tribe has been murdered by a gang of outlaws. The primary town of the mail route is also being used as a hideout and base of operations for a gang of counterfeiters led by Joe Polini (Tristram Coffin.) Jack and an undercover federal agent, Duke Evans (Dennis Moore), round up the counterfeiters and turn Polini over to the Indian Chief (Iron Eyes Cody) as the killer of the brave.