A police chief fights to reopen the investigation into her father's death.

Mylène teams up with Fred to solve the murder of Morgane, a young chef whose body is found in the "forges de Buffon", her lungs blown up by nitrogen. Alain Malaval, her partner and a former cop is in state of shock and brings Fred's suspicion on him. Simultaneously, another body is found. It's Captain Deville's, who's been missing for several years and happened to be Mylène's father. Are the two murders connected?—Happy_Evil_Dude

Police officers Mylène and Fred investigate the murder of a young chef whose lungs were blown up by nitrogen. During the investigation, the body of Mylène's long-missing father is found, bringing into question a link between the two deaths.—Happy_Evil_Dude