Private detectives Stan Laurel and Oliver Hardy travel from their hometown of Peoria, Illinois to Mexico City in pursuit of an infamous female larcenist named Hattie Blake (Carol Andrews), who is publicly known as ”Larceny Nell”. Meanwhile, an American sports promoter, Richard K. Muldoon (Ralph Sanford) meets with publicity man ”Hot Shot” Coleman (Richard Lane (actor)), and his assistant (Irving Gump) to discuss an upcoming bullfight featuring famed Spanish matador Don Sebastian. But when Muldoon sees pictures of the bullfighter he becomes enraged; Don Sebastian looks exactly like Laurel. Hot Shot is confused until Muldoon tells him the story: Eight years earlier in Peoria, Laurel and Hardy both testified against Muldoon in a criminal case, and Muldoon was wrongfully convicted of the crime (the details of which were never specified) and granted a twenty-year jail sentence; However, after five years the true criminal confessed to the crime and Muldoon was subsequently released. But while in prison he had lost his wife and business and had to start all over in Mexico. He still holds a grudge against Stan and Ollie and vows revenge with a large knife for emphasis: "Someday I'll run across them again! And when I do, I'm going to skin them alive! First the little one, then the big one! ''I'll skin them '''both''' alive!!"''