Wealthy Easterner Dick Latham, determined to disprove his father Amos' accusation that he is an idler, rides the rails West to the mining town of Twin Bridges. Hugh Godson, the town's corrupt political boss, appoints Dick sheriff, supposing him an easily manipulated tenderfoot. To Godson's dismay, Dick proceeds to clean up Twin Bridges, closing the saloons and gambling dens, and forcing even the most hardened miners to attend church. Godson schemes to cheat Rosa Crimmins and her ailing father out of their ranch, which is rich in gold deposits, but Dick foils the plot and makes Rosa his deputy. When Dick learns that some rich Easterners are gambling in the hotel, he arrests them all, despite the fact that his father is among them. Amos, proud of his son's newfound manliness, buys the Crimmins ranch and gives his hearty approval to Dick and Rosa's romance.