While on a walk, Conan, Ran, and Kogoro hear a gunshot from a house. While heading to investigate, Kogoro was unable to catch a masked man that runs past them.

The nearly hired maid and adviser inform Conan of Jirokichi’s strange behavior.

Jirokichi Suzuki receives a letter from Kaito Kid which reveals that Kid plans on opening Jirokichi’s impenetrable safe, the Iron Tanuki. The letter however is not written in Kid’s usual style raising the idea that an imposter is after Jirokichi’s safe

The Detective Boys decide to investigate a spooky château but realize a man is currently inhabiting the house.

Conan notices something is strange about Hiramune’s dying message, and realizes his message indicates the person who murdered him was a copycat killer.

Takagi and the Detective Boys decide to accompany Conan and his interrogation of the victim’s relatives. Conan than realizes the victims share one thing in connection.

After going over the characteristics of the boy, Conan realizes who it is.

A blind rich woman named Shoudo Kuromi asks Mouri to help her find a boy who saved her life in the past; the only clue is that the boy should have a large scar across his torso.

Conan investigates the apartment and finds the bathroom to be too clean and that there is no underwear in the dryer. He deduces that the Hammer man is trying to hide his gender.

A person who murders people with a hammer, dubbed “Hammer Man”, has been seen escaping to an apartment after assaulting a woman. Sato and Takagi stake out the apartment and are later accompanied by Conan, Ran and Sonoko.