André Masson, specialist in modern art, receives a letter according to which a painting by Egon Schiele had been discovered in Mulhouse. He finds that the work has been missing since 1939. This discovery puts his career in danger.

At 18, Brahim, a promising footballer, is preparing to sign his first professional contract in Lyon. However, the arrival of a powerful foreign agent changes things, and he and his cousin race against time.