Sonoko's uncle Jirokichi once again goes up against Kaito Kid when the widow of an old friend comes to him with a puzzle box containing a rare moonstone.
After the contact's treasure is revealed to have been stolen during a robbery, Conan, Kogoro and Ran rush to locate a journalist who has been kidnapped by the contact.
Encountering a sushi chef with a great aptitude for detective work, Kogoro teams up with him while he, Conan and Ran investigate a purse snatching on a packed, moving train.
A pro-golfer is found unconscious in his apartment with his dead girlfriend by his side, claiming that the two of them were attacked by a stalker of his. As Conan investigates, however, he comes to suspect that the golfer is lying.
