Reese gets the drop on outlaw Johnny Rhodes but his horse Cactus is spooked by a rattler and Reese is thrown and knocked unconscious. Rhodes' horse is lame so he takes Cactus. When Reese wakes up he has amnesia and because of the horse with Rhodes name on it he is mistaken for the outlaw. Chad and Joe have been sent to track Rhodes in the hopes it will keep him too busy to attack a gold shipment. They come upon Reese in San Rosa and observe him as ""Johnny Rhodes"". They approach him as his ""outlaw"" buddies, assuming he is undercover. After their conversation they get the true picture of Reese's condition. Reese has Mio, the cantina owner with eyes for Reese, help him tie up Chad and Joe after they've been slipped knockout pills. The real Rhodes appears with his gang. They take Reese, Chad and Joe prisoner and tie them up in the cantina. Mio cuts their ropes and helps them fight off and capture Rhodes and his gang.