In a crowded subway train, a woman pushes a man. They argue. Their little joust "barks loudly", but does not lack charm... Later, in the corridors of the station, the two strangers make love awkwardly in the booth of a photo booth. At last, on the surface, they will say goodbye...
A teenage girl lives with her grandmother and worries she will be removed by social services. She sets off to get adopted by someone she admires more than anything, one of the most powerful women in the world.
Marie Lemaire is poisoned during a dinner that brings together an association of merchants. She is the heiress of her recently deceased husband, François, who was the owner of the largest glass factory in the city. All the guests are potential suspects and the investigators must sort out the real from the fake, detect motives and verify alibis. Olivia Rousseau, one of the guests, ex-mistress of François Lemaire who left her to marry Marie, is dead at her home. In a letter, she declared that she had poisoned Marie and killed herself in the same way.
An apparently well-rounded woman hides a secret wound: her daughter Hortense was taken from her as she was only 3.