A peace-loving, part-time sheriff in the small town of Firecreek must take a stand when a gang of vicious outlaws takes over his town.
Nugget Clark has been having his stagecoaches wrecked and Marshal Rocky Lane arrives to investigate. The foreman of a nearby mine is stealing part of the mecury output and selling it in Mexico. Nugget's house has a direct pipeline from the mine and they are trying to drive him into bankruptcy to obtain his ranch. Rocky is quickly aware that the Foremen is behind Nugget's holdups but they are also onto Rocky when he accidently drops his badge during a fight.
Federal agent Steve Lawton works undercover with his assistant, Smiley Burnette, to track down an outlaw gang that is raiding government gold shipments bound for Fort Navajo.