The Stooges are private detectives in the Old West trying to help a girl recover an IOU from a bad guy. Their attempts to steal the IOU from the villain's wallet and then from a safe meet with problems until Curly, who goes berserk whenever he sees a mouse, knocks out all the bad guys.

After it has been sold to a new owner,a shyster and killer has stolen the property deed to a valuable mine and is using it for blackmail purposes. The former owner of the mine is framed for a murder, and his daughter and the new owner work to save him from the gallows.