Robert Vernier is assigned by the Secret Service to unmask a band of gangsters determined to get their hands on the plans for a new plane. They manage to steal part of it and kidnap Robert's fiancée, named Monique. Robert will manage to dismantle the gang and will be surprised to find that at the head there is a policeman...
| Actor | Role |
|---|---|
 Maurice RégameyRobert Vernier | Robert Vernier |
 Pierre CressoyMr. Pascal | Mr. Pascal |
 Lysiane ReyMonique Gambier | Monique Gambier |
 François PatriceJulien Gambier | Julien Gambier |
 Irène de TrébertIrène | Irène |
 Alexandre RignaultMartinzal | Martinzal |
 René BlancardDoirel | Doirel |
 Raoul MarcoVaminy | Vaminy |
 Jean GavenFred | Fred |
 Jacques DynamReinard | Reinard |
 Michel FlammeMartin | Martin |
| PPaul AzaïsMarco | Marco |
| MMaria ArandaNot listed | Not listed |
 Paul BonifasThe Commander | The Commander |
 Jean ClarieuxThe agent | The agent |
 FransinedJimmy | Jimmy |
 Robert Le BéalMax | Max |
| RRené LebrunNot listed | Not listed |
| RRaymond RaynalBertrand | Bertrand |
 Émile RiandreysThe bartender | The bartender |
| JJean ThielmentCharley | Charley |
 André WasleyNot listed | Not listed |