A smooth criminal, who turns to be Manuel Ismora, and his gang successfully and peacefully pull off con after heist. Elsewhere a timid office worker, Gabriel Dupon, is pressured by his boss into making a sale. A chain of events causes him to get mixed up with the criminal, and get arrested. Lack of evidence ensures Dupon's release, but brings him to the attention of the criminal who persuades him into cooperation. Ismora exploits the fact that Dupon looks so much like him that they could be - carbon copies.