Hélène, a fragile and romantic teenager, discovers that her father, a rich business man, has a mistress. Curious, she decides to go and meet this woman who is described as strange. At the first chance she has she goes to her house in the Ramparts of Béguines... from then on she goes back often, discovering a new world of artists and nightowls where she also experiences love in the arms of Tamara.
| Directing | Guy Casaril | Director |
| Writing | Guy Casaril | Screenplay |
| Writing | Françoise Mallet-Joris | Screenplay |
| Writing | Françoise Mallet-Joris | Novel |
| Editing | Louisette Hautecœur | Editor |
| Camera | Andréas Winding | Director of Photography |
| Sound | Roland Vincent | Original Music Composer |
| Sound | Michel Delpech | Original Music Composer |
| Production | Robert Hakim | Producer |
| Production | Raymond Hakim | Producer |
| Art | François de Lamothe | Production Design |
| Costume & Make-Up | Jacques Fonteray | Costume Design |
| Costume & Make-Up | Patrick Archambault | Key Hair Stylist |
| Costume & Make-Up | Aïda Carange | Makeup Artist |