A wealthy industrialist discovers his wife is having an affair and decides to exact revenge by blackmailing her under an assumed identity.

Jacques Decrey, an industrialist, finds out that his wife Gloria has a lover. Posing as a man named Berthier, he blackmails her. After a while, Decrey decides to make Yves Normand, a young unemployed actor and Gloria's lover, out to be the blackmailer. But doing so he has set off an infernal machine...—Guy Bellinger

Out of the blue, after years of marriage, the affluent industrialist, Jacques Decrey, finds out that his beloved wife, Gloria, is cheating on him with the unemployed young actor, Yves Normand. Under those circumstances, betrayed and humiliated, the wronged husband concocts an elaborate scheme, designed to punish the brazen clandestine lovers. Now, under the guise of an unknown blackmailer, Jacques demands increasingly large amounts of money to keep "his" mouth shut; however, his is a dangerous game with unforeseeable consequences. Will the truth set free those who have their backs to the wall?—Nick Riganas