Fred is absent for at least six weeks and the homicide squad is now provisionally headed by Celine. In a fateful twist of fate, Karadec's old team and his new team meet over the same case.

Celine is given permission to reopen the Emma Perrin case. A seven-point ladybug stuck to Emma's windshield reveals to Morgane that she must be in Brittany. There, she and Karadec meet a survival troop.