Louis, a nine-year-old boy from Paris, spends his summer vacation in a small town in Brittany. His mother Claire has lodged him with her girlfriend Marcelle and her husband Pelo while she's having her second baby. There Louis makes friends with Martine, the ten-year- old girl next door, and learns from her about life.
| Actor | Role |
|---|---|
 AnémoneMarcelle | Marcelle |
 Richard BohringerPelo | Pelo |
 Antoine HubertLouis | Louis |
 Vanessa GuedjMartine | Martine |
 Christine PascalClaire, Louis' mother | Claire, Louis' mother |
 Pascale RobertsYvonne, Martine's mother | Yvonne, Martine's mother |
 Marie MatheronSolange, Martine's sister | Solange, Martine's sister |
 Daniel RialetSimon, Solange's fiancé | Simon, Solange's fiancé |
 Jean-François DérecDriver | Driver |
 Raoul BillereyPriest | Priest |
 André LacombeHippolyte, gravedigger | Hippolyte, gravedigger |
 Denise PéronMarie, aka 'La Grenouille' | Marie, aka 'La Grenouille' |
 Jean Cherlian'Le Gros' | 'Le Gros' |
| EEugenie Charpentier'La Lubie' | 'La Lubie' |
| TThierry FlamandDoctor Gauthier | Doctor Gauthier |
| MMarcelle LucasPoultry plucker | Poultry plucker |
| JJeanne AllairePoultry plucker | Poultry plucker |
| CChristine HubertButcher | Butcher |
| RRobert AvertyButcher | Butcher |
| MMarie-Therese AllairiButcher shop customer | Butcher shop customer |
| PPaul BichonPelo's boyfriend | Pelo's boyfriend |
| HHenri CassardRaymond, postman | Raymond, postman |