Fūrinkazan - The Mysterious Armoured Knight Kogoro is hired by the Torada family to solve the murder of Yoshirō Torada; Yoshirō was swept away by a tornado and was found by an unknown culprit, who instead of helping him, left a dead centipede beside Yoshirō and left him to die. They believe the culprit is from the Tatsuo family, a family whom they share a mutual hatred for. At the same time, Heiji is hired by the Tatsuo family to investigate the death of their son, Kōji Tatsuo, who was found buried under a pile of rocks, bludgeoned to death, and had a dead centipede placed beside his body. During the investigation, Conan, Heiji, run into a third detective named Kansuke Yamato who is investigating the same case. Their investigations lead them to believe the victims and serial killer are somehow related to an incident six years ago, where a respectable officer name Kuroto Kai was found dead during his mounted archery practice...