Paris 1942. François Mercier is an ordinary man who only aspires to start a family with the woman he loves, Blanche. He is also the employee of a talented jeweler, Mr. Haffmann. But faced with the German occupation, the two men will have no other choice but to conclude an agreement whose consequences, over the months, will upset the fate of our three characters.

One day, Jean-Louis discovers that his heart has stopped. He is not dead, can walk and talk, but his heart is no longer beating. With the help of his wife and a friend, he tries to understand the origin of this mystery.

Fired for insubordination, PJ Antoine Verlay, good cop but a blood strand and having difficulty working as a team, is attached to the OCBC (Central Office for the fight against Traffic in Cultural Goods) thanks to the intervention of the commander Pardo, his friend who becomes, therefore, his new superior. A clever investigator, but a stranger to everything related to culture, Antoine will have to work with Florence Chassagne, renowned art historian, who lives, speaks and breathes culture, to the point that - fruit of her great imagination - it happens to her in the midst of daydreams, to see and talk to the great artists who have disappeared as if they were familiar to her.