To protect him, Georges takes the place of his twin brother, Jacques, suspected of murdering an aircraft manufacturer and stealing the plans for a revolutionary engine. He sets out to compromise the police investigation and the actions of the document smugglers seeking to recover the plans.
| Directing | Jean Devaivre | Director |
| Writing | Gabriel Germain | Scenario Writer |
| Writing | Pierre Apestéguy | Dialogue |
| Art | Paul-Louis Boutié | Art Designer |
| Sound | Joseph Kosma | Sound Director |