As Christmas Eve approaches, Léo, a naïve 7-year-old kid, searches for evidence to prove that Santa Claus really exists. His older brother, Kevin, tries to prove him wrong.
| Actor | Role |
|---|---|
| GGabriel RocherLéo | Léo |
| GGabriel TibiKevin | Kevin |
| VVincent CombeDad | Dad |
| AAudrey San LucasMom | Mom |
| JJean-Thierry Le BougnecUncle | Uncle |
| SSamantha Leroy-SeitherUncle's Companion | Uncle's Companion |
| MMarie-France MarnayGrandmother | Grandmother |
 Pierre HurelJérémie | Jérémie |
| JJérémieToy Seller | Toy Seller |
| MMorgan CiniBen (voice) | Ben (voice) |