Paris, August 15th.
She must die today. He wants to kill before midnight.
Can two cops avoid meeting each other?
Lisa wakes up in her Paris apartment. The streets are deserted and the heat is unbearable. She barely has time to wish Walter a good day before he's already gone for the weekend to visit his parents. A family meal is in order. Left alone, Lisa dreads this umpteenth day devoted to her thesis... but that's not all. A few months earlier, on vacation in Marrakech with some friends, she was predicted a violent death on August 15 by a fortune-teller... The kind of prediction you don't forget. Is she really in danger, or is she the victim of paranoia fueled by this frightening memory?
On the other side of town, Stanislas, an investigator, is working on a difficult case. A killer has been on the loose for several days. Three women have already been killed: all blonde, in their thirties, living alone... with a cat. The police station is in a panic: time is running out and the cops still have no leads. Their last resort: call in Laurence, an ex-investigator with a troubled past.