The place is Egypt. Lupin uses a balloon to boldly steal the deathmask of the boy-king, Tutankhamen. But the instant he puts it on, what appears before his eyes is the world of the pharaohs, 3000 years ago. The only way to break the ominous pharaoh's curse which is possessing Lupin is to put the mask back where it came from. How effective will the plan to return the golden deathmask be?