Charlotte Castang is a working-class 13-year-old girl, who lives in a drab, run-down neighbourhood, and is ready to become an adult. Her mother died giving birth to her, and she lives with her crass brother and a father whose attention is elsewhere. Her only friend is Lulu, a sick 10-year-old she regards as a pest. Charlotte is antisocial, bored and dreams of a better life. Her life improves when she meets Clara Bauman, a pianist prodigy.
| Actor | Role |
|---|---|
 Charlotte GainsbourgCharlotte Castang | Charlotte Castang |
 Bernadette LafontLéone | Léone |
 Jean-Claude BrialySam | Sam |
 Julie GlennLulu | Lulu |
| CClotilde BaudonClara Bauman | Clara Bauman |
 Jean-Philippe ÉcoffeyJean | Jean |
 Raoul BillereyAntoine Castang | Antoine Castang |
| RRichard GuerryRegard sombre | Regard sombre |
 Simon de La BrosseJacky Castang | Jacky Castang |
| CCédric LiddellPierre-Alain Gallabert | Pierre-Alain Gallabert |
 Chantal BanlierServeuse perroquet | Serveuse perroquet |
 Philippe BaronnetGymnastics teacher | Gymnastics teacher |
| LLouisa ShafaLocker room woman | Locker room woman |