Le Tableau volé follows André Masson, an auctioneer who uncovers a lost masterpiece by Egon Schiele in Mulhouse. The painting, stolen by the Nazis in 1939, is authentic, leading to an exciting discovery but also a complex legal battle. André, supported by his ex-wife Bertina and his quirky intern Aurore, faces both career triumphs and personal challenges as they navigate the intrigue surrounding the artwork’s rightful ownership.