- Ryujo Hoshiko (Goriki Saiga) comes to detective Kindaichi Kosuke’s (Yamashita Tomohisa) office with a request. She would like him to investigate an attempt to poison her father, Baron Ryujo Kiyohisa. Hoshiko says this may have something to do with the issues of succession such as the peerage and fortune. Accepting the request, Kindaichi and Hoshiko are driven by a servant of the Ryujo family to the mansion in Nagano Prefecture. On the way, the car comes to an abrupt halt on a country road. They have stumbled across the dead body of Kazuma, the husband of eldest daughter Ryujo Hanayo. After assisting with the investigation, Kindaichi and Hoshiko finally reach the mansion. The police detective Hibino is questioning a grieving Hanayo, her mother Shimako, second daughter Yukiya and her husband Hoshino Natsuhiko. Then another man arrives. It is Akechi Kogoro. He received a warning from the 20-Face Phantom who is targeting the golden statute of a Buddhist deity which is in the Ryujo’s possession. Kindaichi and Akechi end up face to face again...