In Paris, six women have vanished, to be found a week later, mutilated with their skulls split open. Evidence suggests that the murderer is a woman and that she is preparing to strike again. Trying to escape from her boring life, Hortense Daniel meets the mysterious Prince Rénine. When Prince Rénine's lover disappears, he fears that she is about to become the latest victim. All seems helpless and a rescue seems impossible before the axe falls. But Rénine is actualy Arsène Lupin, the world's greatest criminal mastermind, and he will stop at nothing to catch the killer.