Ever since the brutal slaughter of her parents, Justine has lived in solitude, wishing to remain as close to invisible as possible. However, the early release of the killer stirs up fear and pain. She finds an unlikely source of comfort in Louis Schneider, a troubled Crime Squad cop in Marseille. With his police force discredited by a series of particularly savage and vicious murders which remain inexplicably unsolved, Schneider, an incorruptible individualist, decides to go against the opinion of his superiors and begins an investigation which will lead him to the gates of hell. Will helping Justine lead him to some form of redemption?