Pitchipoï (2015)

Julien Schulmann is a comedian. He has just lost his father, a Polish Jew and extermination camp survivor. Before he died, his father left a "will" in which he requested that his other son, Pierre, who hasn't been heard from for two years, spread his ashes in Poland. His father's preference comes as a rude shock for Julien, and it opens a chasm inside him, slowly bringing to light an unspeakable secret.