Plot synopsis: Sarah leads a dull, lonely life until the day she finds eleven-year-old Léo, hidden in the trunk of her car. The boy had just lost his father in a shootout in a parking garage. He hid Léo in the stranger's car for his protection. Then a killer stands in front of Sarah's apartment door, kills her neighbor and hunts down the boy. He wants to get information that apparently only Léo knows.