Macho Callaghan is a lieutenant in the Federal Guards and his job is to capture Butch Cassidy, Ironhead, and their band of outlaws. Getting in touch with Ironhead, Macho finds a way of being hired by the outlaws. But when the two leaders quarrel and decide to separate, Macho manages to convince Ironhead to attack Butch Cassidy.

Cast: Jack Betts, Gordon Mitchell, Benito Pacifico, Grazia Giuvi, Giancarlo Prete, Luciano Conti