Lupin uses a balloon to boldly steal the solid-gold mask of Tutankhamen. But the instant he puts it on, what appears before his eyes is the world of the pharaohs, 3000 years ago. It seems that the mask is cursed and the only way to break the pharaoh's curse is to put the mask back where it came from. Jigen, Goemon and Fujiko plan to help out Lupin by returning the mask for him.