Émile and Fredo are two crooks who have just committed an armed robbery in a Paris bank. To escape the police, Émile, accompanied by his friend Lulu, takes refuge in the apartment of Antoine Perrin, a peaceful civil servant at the Ministry of Agriculture and amateur musician with the group Les Joyeux Colibris. Lulu offers to seduce him in order to prevent him from getting hit on the coffee pot.
| Actor | Role |
|---|---|
 BourvilAntoine Perrin | Antoine Perrin |
 Pierrette BrunoLucienne "Lulu" Trouchu | Lucienne "Lulu" Trouchu |
 Robert RollisÉmile alias Gustave | Émile alias Gustave |
 Roland BaillyFredo | Fredo |
 Alix MahieuxFernande Péquinet | Fernande Péquinet |
 Albert MichelInspector Péquinet | Inspector Péquinet |
 Max DesrauLegrand, the radio reporter | Legrand, the radio reporter |