The film follows gentleman thief ArsÃ¨ne Lupin from a small boy, through the death of his father, and his later years when he meets the strange woman, JosÃ©phine, who appears to be immortal and uses a hypnotic drug to enslave people to her will. ArsÃ¨ne's ethos is to steal from the rich and deserving crooks. In this film he comes up against two parties, a secret society and JosÃ©phine, who are intent on gathering three crucifixes which will reveal the secret of a lost treasure.The film refers to many of the Maurice Leblanc's ArsÃ¨ne Lupin stories, including "The Arrest of ArsÃ¨ne Lupin", "The Queen's Necklace", "Sherlock Holmes Arrives Too Late", 813, and The Countess Of Cagliostro. Some of these references are more direct and complete than others.
Question: What will reveal the secret of a lost treasure?, Answer: Three crucifixes. Question: Whose stories does the movie refer to?, Answer: Maurice Leblanc Question: What are the two parties that Arsne comes across?, Answer: A secret society and Jos̩phine.