Everything goes for the best in Fanny's life without stories ... until she discovers that her beloved son, Arthur, nine, is the scapegoat of three boys at his school. Fanny will not leave her son alone in front of these little executioners: she will give these dirty kids the change of their room. Thunderstorms and playground traps, now it will be "an eye for an eye and a tooth for a tooth!"
| Actor | Role |
|---|---|
 Audrey LamyFanny | Fanny |
 Florent PeyreStéphane | Stéphane |
 Charlie LangendriesArthur | Arthur |
 Max BoublilLe père en jogging | Le père en jogging |
 Michèle MorettiMme Picard | Mme Picard |
 JoeyStarrChef William | Chef William |
 Igor van DesselMaxime | Maxime |
 Damien MarchalMembre du jury | Membre du jury |
 Louis DurantRaphaël | Raphaël |
 Karina TestaInstitutrice | Institutrice |
 Hélène de Saint-PèreMme Santoux | Mme Santoux |
 Tania GarbarskiAnne | Anne |
| MMartin GillisHugo Boutboul | Hugo Boutboul |
 Alice VersetJuliette | Juliette |
 Sandra ZidaniMme Boutboul | Mme Boutboul |
 Hervé LassïnceM. Santoux | M. Santoux |
| JJules HanquetFélix | Félix |
 Elsa HoubenManon | Manon |
 Laurent D'EliaMonsieur Lombartini | Monsieur Lombartini |
 Kody KimSimon | Simon |