Four little girls flee the cold concrete world of the housing project they live in, take refuge every evening in a house on an island in the middle of the Marne River. It is secret hideaway that no one should trespass. Unfortunately a big girl reveals everything to the schoolmistress and scandal breaks out. But it is Sophie, the youngest of the group, who gets suspected by her..."friends".
| Actor | Role |
|---|---|
 Ginette PigeonMlle Mairet, l'institutrice | Mlle Mairet, l'institutrice |
 Pierre Dudanl'éleveur d'oiseaux | l'éleveur d'oiseaux |
| SSylviane MargolléSophie | Sophie |
 Geneviève GaléaNot listed | Not listed |
| JJocelyne BressyNot listed | Not listed |
| MMichèle VerezNot listed | Not listed |
 Sylvie DorléacSylvie | Sylvie |
 Catherine DeneuveNot listed | Not listed |
| RRenée Barellla directrice de l'école | la directrice de l'école |