Conan and the Detective Boys go by a salon that Ayumi gets her hair cut at and hears Mika Mitsui, the assistant, to the owner, Futou Midori, fighting about Mika leaving. Ayumi and the Detective Boys go to Mika's apartment so Ayumi can get her hair cut only to find Mika dead! It's up to Conan and the Detective Boys to solve the case.