Elvire, Nathalie and Christine, three young ladies with a proven track record, are called in by the Secret Service to retrieve coveted papers concerning a new explosive. Introduced to a fearsome environment thanks to a female helper, they face kidnappings, play a double game, toil endlessly, lend helicopters and finally triumph, smiling, after a breathtaking fight.
| Actor | Role |
|---|---|
 Claudine DupuisElvire | Elvire |
 Louise CarlettiChristine | Christine |
 Tilda ThamarOlga | Olga |
 Raymond SouplexBonneval | Bonneval |
| RRobert BerriCarboni | Carboni |
| JJean BalthasarNot listed | Not listed |
 Simone BerthierHortense | Hortense |
 Alain BouvetteLa Quille | La Quille |
 Paul DemangeLe chef d'orchestre | Le chef d'orchestre |
 Harry-MaxLe médecin de la prison | Le médecin de la prison |
 René HavardCalamar | Calamar |
| AAbel JacquinLe directeur de la prison | Le directeur de la prison |
 Robert Le BéalGauthier | Gauthier |
 Roger LegrisLe blanchisseur de la prison | Le blanchisseur de la prison |
 Michèle PhilippeNathalie | Nathalie |
| BBetty StresaNot listed | Not listed |
 André VersiniMartin | Martin |
| FFabienneAntigone | Antigone |