A rich but naive young woman is in possession of some priceless jewels. She herself doesn't know it, but a gang of jewel thieves does.
When a famous necklace is stolen on an ocean liner, master thief Arsène Lupin returns to solve the crime and clear his name.
Arsène Lupin is a gentleman thief with a secret identity who steals from the rich and gives to the poor. Set in Paris, the story follows Lupin as he outwits the police and steals a valuable diamond bracelet. Along the way, he encounters deception, mistaken identities, and a budding romance.