Akikazu Fujishima (Kōji Yakusho) is a former detective who lost his job, marriage and daughter after having a violent reaction to his wife's infidelity.

Akikazu begins investigating the disappearance, with police detective Asai (Satoshi Tsumabuki) ostensibly helping but in truth rarely involving himself in the search.

Flashbacks to three years prior reveal how Sigon (Hiroya Shimizu) in Kanako's middle school had fallen in love with her, as she was the only kid who didn't bully or ostracize him.

In the present, Akikazu is eventually captured by the Yakuza, who torture and kill Kanako's gang member friend Matsunaga (Mahiro Takasugi) in front of him.

Matsunaga informs Akikazu as to how Ogata was a "weak boy with a cute face" so they kidnapped him and allowed old men to rape him, which caused him to commit suicide.

The Yakuza inform Akikazu that the police are also involved in the prostitution ring and that Detective Aikawa (Joe Odagiri) had killed several of Kanako's criminal friends in an attempt at a cover-up.