Two ex-cons plan to kill the range rider marshal who sent them to prison and, when their plan fails, join forces with their former boss, a crooked saloon owner who has the same idea.
Two released convicts who had been sent to the hoosegow by Jones vow revenge. They trick Jones into a kerosene-doused shack and, only with the heroics of his loyal horse, Silver, does he escape the plot. McCoy and Hatton go undercover to apprehend the outlaws.