Julien and his mum care for each other very much. But Julien has committed a deadly sin: he is growing into a teenager! Worse, he has found himself a girlfriend of his age. "Mummy" is not going to tolerate such an ignominy. Julien is HER baby and will remain HERS for ever, encouraged in her "crusade" by her bovine husband and barely thwarted by the more courageous interventions of Suzanne, Julien's sympathetic big sister.
| Actor | Role |
|---|---|
 Nathalie BayeMother / La mère | Mother / La mère |
 Olivier GourmetFather / Le père | Father / Le père |
| VVictor SévauxJulien / Son | Julien / Son |
 Marie KremerSuzanne / Sister / la sœur | Suzanne / Sister / la sœur |
| VValentine StachAlice / Julien's Girlfriend / La copine de Julien | Alice / Julien's Girlfriend / La copine de Julien |
 Emmanuelle RivaGrandmother / La grand-mère | Grandmother / La grand-mère |
 Michèle MorettiPrincipal / La proviseure | Principal / La proviseure |
 Thomas SilbersteinSam | Sam |
 Nicole GrosLa pâtissière | La pâtissière |
| MMaxime MonsimierCopain Julien 1 | Copain Julien 1 |
| JJulien OraczCopain Julien 2 | Copain Julien 2 |
 Ludmila RuosoPolicewoman / policière | Policewoman / policière |
| SSébastien GuissetUn policier | Un policier |
| EEsteban ChallisUn policier | Un policier |