Antoine, 11, is on holiday with his grandfather. One night he catches thieves hiding their booty in a pond. Antoine seizes the 40 million. But Liza, his new friend, is the daughter of one of the criminals. Both children soon face threats.
Jean-Pierre Darroussin
as Jean Messignac, cousin d'Antoine
Aurélien Wiik
as Antoine Messignac
Michel Duchaussoy
as Jacques Hivers, compagnon de Claire
Georges Wilson
as Louis Messignac, le grand-père d'Antoine
Joséphine Serre
as Lisa, fille de Jacques
Rose Thiéry
as Clémence
Sophie Broustal
as Dominique, alias « Claire »
Christine Sireyzol
as Louisette, la nièce de Clémence
Jean-Claude Dreyfus
as Max Desartre, malfrat dans le fourgon blindé
Jean Carmet
as M. Durandet, vétérinaire en retraite
Frédéric van den Driessche
as Jérôme Messignac, père d'Antoine
Patrick Bonnel
as Gendarme
