Simon, Helen and their daughter live in Paris in an old apartment that belongs to his Jewish family for generations. They decide to sell the basement to a needy old man but after the deal is done they find out some disturbing facts on the guy. A new thriller on the Anti Semitism that lurks beneath. Starring Francois Cluzet (The Intouchables), Jeremy Renier (Saint Laurent), Berenice Bejo (The artist, A Knight's Tale)