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When French teen Francois (Mathieu Amalric) learns a confusing family secret from his aunt (Julie Depardieu), he sets out to discover his true history. Francois struggles to understand his identity in light of the realization that, in the face of German occupation of Paris, his father, Maxime (Patrick Bruel), made the difficult decision to erase his Jewish heritage and transform the family into the Grimberts -- faux-Catholics who would have a better chance of surviving the Holocaust. Wikipedia