It’s Halloween, and Ducobu is back for an adventure filled with laughter and mystery! Professor Latouche and Miss Rateau move into a house haunted by the ghost of Anatole, the biggest dunce in the history of Saint-Potache School. This mischievous ghost will drag Ducobu, Léonie, their parents, and Kitrish into a series of hilarious and unexpected adventures. But beware: on Halloween, anything can happen!
| Actor | Role |
|---|---|
 Élie SemounGustave Latouche / Ghislaine Latouche / Jean-Théodore Latouche | Gustave Latouche / Ghislaine Latouche / Jean-Théodore Latouche |
 Frédérique BelAdeline Gratin | Adeline Gratin |
 Émilie CaenGhislaine Rateau | Ghislaine Rateau |
 Loïc LegendreHervé Ducobu | Hervé Ducobu |
 Gérard JugnotMonsieur Kitrich | Monsieur Kitrich |
| CCharlie Garnier NaslinDucobu | Ducobu |
| AAntoinette RougierLéonie Gratin | Léonie Gratin |
| SSumGendarme | Gendarme |
 François LevantalDirecteur de Saint Potache | Directeur de Saint Potache |