The criminal (Robert Hossein) wants to be like the American gangster John Dillinger. The inspector (Charles Aznavour), who he knew when they were kids, is following him. The killer is caught with a lot of guns and sleight of hand. Stella, his girlfriend, is the only one who makes him feel anything (Virna Lisi). When the police close in on Dillinger, he kills several innocent people in a crowd during a shootout. When the man runs out of bullets, the mob decides to take matters into their own hands and approaches him with a noose.