A sadistic killer cult kidnaps and sacrifices beautiful women. A young girl, just paroled from prison, moves into a strange house and appears to be the cult's next victim.

Serial murders involving all kinds have happened. All the victims are from a Music School led by a famous pianist. Conan and company have been invited to a opening concert of the Music Hall built by the pianist. The biggest attraction of this concert is the world famous violin called "Stradivarius" and a special appearance of a singer who has perfect pitch.