Kiuchi (Shirasu Xun), who works at the police station in Shinagawa, feels someone watching him. At the same time, he witnesses many times a suspicious woman standing at the scene of the incident. The woman was Ruriko (Haruka Shimazaki). Meanwhile, Kiuchi follows Ruriko as he enters the Suzugamori prison, an execution place in the Edo period, and listens to his story.