Nicolas Mallet, an inconspicuous and shy bank employee, one day successfully invites Marie-Paul, a young woman he hadn’t known before, in the streets of Paris to a café and sleeps with her the next day. When he tells his surprised friend Claude about the incident, the disillusioned and handicapped writer starts to guide him, leading Nicolas on a dazzling social ascent.
| Directing | Michel Deville | Director |
| Writing | Christopher Frank | Writer |
| Writing | Roger Blondel | Novel |
| Production | Léo L. Fuchs | Producer |
| Editing | Raymonde Guyot | Editor |
| Costume & Make-Up | Simone Baron | Costume Design |
| Camera | Claude Lecomte | Director of Photography |
| Costume & Make-Up | Maria Teresa Corridoni | Hairstylist |
| Costume & Make-Up | Didier Lavergne | Makeup Artist |
| Costume & Make-Up | Éliane Marcus | Key Makeup Artist |
| Sound | Daniel Couteau | Foley Artist |
| Sound | André Hervée | Sound |
