
A Parisian couple decides to sell an unsanitary basement in their building. A very ordinary, nondescript man, Mr. Fonzic, shows up to buy it. Nothing unusual there, until the man moves into the cellar and makes it his permanent residence. The couple tries desperately to cancel the sale but to no avail. Worse, Mr. Fonzic becomes a threat to their family as he befriends their teenage daughter on whom he seems to exert a perverted influence.

as Jacques Fonzic

as Hélène Sandberg

as Simon Sandberg

as David Sandberg

as Maître Rivière

as Le proviseur

as Amos

as Justine

as Nelly Sandberg

as Grand-père Gérard

as Jérémie Sandberg

as Olivier Sandberg

as Luka Steiner

as Maître Massard

as Maître Carole Vasquez

as Monsieur Leroux

as Monsieur Martini

as Noémie Bouvier

as Monsieur Lefèvre

as Madame Lefèvre