Antoine Verlay is an intuitive police officer who appreciates efficiency and complicated investigations. Appreciated by his hierarchy, he was entrusted by Commander Pardo with a unique dossier. Indeed, at the Château d'Amboise, a painting representing Anne of Brittany was stolen. However, this theft caused a victim: a corpse was found in the gardens. Ignoring everything about Renaissance painting, Verlay was forced to collaborate with Florence Chassagne. This specialist in the history of art is brilliant but totally devoid of tact. Together, they try to determine if the a priori unspecified work does not hide an invaluable painting ...