Synopsis: Pablo Braganza is a Mexican bandit who is inspired by an American gangster film to reorganize his outlaw gang to Chicago standards and practices. Also a music lover, Pablo kidnaps young opera singer Chivo because he likes his voice. Pablo then forces Chivo to capture the son of an American millionaire and his fiancée. When the rich boy escapes solo, the gay desperado serenades the fiery girlfriend amid every sort of chaos.