Mitsuhiko Tsuburaya hands Conan Edogawa a pile of manga, which he begins to read despite its sheer size. Meanwhile, Kogorou Mouri is requested by the Mine clan to guard their prized sword in the dojo, after now Kaitou Kid mailed a warning of his intent to pilfer it. When they reach the dojo, Conan and his companions encounter Yaiba Kurogane. Together, they plan to stop the phantom thief's scheme. Yet Conan senses something odd in the unfolding case today.