Fousseini, a young painter, struggles to make a living from his passion. Suffering from not being supported by his family , his only moments of breathing come when he reunites with Assata, a young Mauritanian student finishing her studies in France. But Assata hides a heavy secret, the young man will eventually discover what will link their two destinies.

In a church in Douai, a body is found staged in a manner reminiscent of the great Inquisition trials of the region in the 15th century. Commander Clara Baudran is forced to team up with Lieutenant Jérôme Santerre, her childhood sweetheart. She thought he had become a priest, but 20 years later she finds him working as a cop and father to a teenager. Once she gets over the shock, she has no choice but to rely on him to help her solve this mysterious murder... even as investigators are faced with a new victim.