An industrialist is falsely accused of murdering one of his creditors and, because he cannot reveal that it was his mistress who gave him the money needed to pay the debt, he is sentenced to life in prison. He escapes, makes a fortune, and, years later, discovers the real culprit.
Young boxer Michel Maudet is sacked by his manager after a series of match defeats and is forced to look for a new job. He is engaged as secretary to a millionaire named Ferchaux who is in a hurry to flee the country when he discovers he has been implicated in a high-profile fraud.