General store owner Judy is fed up the crime in her county such as bank robbery and an illegal crooked gambling den that fleeces her two prospector friends. Taking after her grandmother, a western sheriff known as “Oklahoma Annie” to all, Judy manages to persuade new sheriff Dan Fraser to deputize her. After she helps capture bank robber Curt Walker, who’s in cahoots with county supervisor Haskell, the sheriff feels confident enough in Judy to leave her in charge by herself while he rides to get the judge for Walker’s trial.