Because outlaws having been robbing Mesquite County banks, Mesquiteer Stony Brooke is asked to pick up some money from the Cattlemen's Association and personally transport it to the Red Rock bank. On his way to collect the money, Stony is chased, then wounded by outlaws, one of whom, Dude Brannen, is his exact double. Dude changes clothes with Stony and assumes his identity, then goes with Stony's letter of introduction to get the money from the bank. When the banker realizes that Dude is not really Stony, Dude shoots him, just as Stony's pals, Tucson Smith and Lullaby Joslin, enter the banker's office. The whole town sees "Stony" ride away and Tucson and Lullaby try to chase after him, thinking that he must have gone crazy. When the coroner rules that Stony is the murderer, the sheriff thinks that Stony must be the leader of the gang who has been robbing county banks, and offers a $5,000 reward for his capture. The gang continue their crimes, and decide to turn in the real Stony, who remains their prisoner, for the reward. By knocking one of the men unconscious, Stony is able to escape, leaving just before the sheriff arrives at the hideout, following an anonymous tip. Stony is able to make his way to his ranch, where Tucson and Lullaby find him unconscious. They hide him in the cellar when the sheriff arrives, but when the sheriff searches the cellar, Stony has already ridden off. The sheriff finds Stony's bloody scarf, though, and is about to arrest Tucson and Lullaby, when Lullaby uses his talents as a ventriloquist to make the sheriff think they are surrounded. After they lock the sheriff in the cellar, they bring their friend, Dr. George Martin, to attend to Stony's wounds. In the meantime, Dude decides that with the real Stony now at large, it might be a good idea for him to have plastic surgery to change his own face. He summons Dr. Martin at gunpoint, unaware that he is a friend of Stony's. Dr. Martin tells one of Dude's men he needs to get a prescription for the surgery and the two go to get it. At a local saloon, while Dr. Martin and the outlaw wait for their prescription, Tucson and Lullaby arrive, followed by Stony, whom everyone but Tucson, Lullaby and the doctor believe to be Dude. When the real Dude shows up for his surgery, the doctor and Stony get the better of him, and after a fight erupts in the saloon, the sheriff arrives and captures the men from Dude's gang. Stony then chases Dude and captures him, thus earning the $5,000 reward for the capture of the real outlaw.