A ghost was seen on the 12th floor of the Asakusa Juunikai building. A newspaper article featuring the sighting brought together Takuboku Ishikawa, who runs a private detective agency and his assistant Kyosuke Kindaichi to solve the case.

The year is 1909. Takuboku Ishikawa is a private detective and runs his own detective agency to support his family. He and Kyousuke Kindaichi get down to investigating a mysterious case that involves ghost appearances at the Asakusa Juunikai building.—Scientiiaa