Detective Kosai Takeo of Wangan Police Precinct is on the verge of being demoted to the Accounts Division in a month. There is a case that he cannot forget. 15 years ago, an 8-year-old girl was kidnapped and murdered. Kosai possesses the special ability to smell the scent of blood at a crime scenes where there is murder. At that time, he had sniffed that scent in the room of university student Dojima Akira, the son of a Diet member. However, he was prevented by political power and could not arrest Dojima. Considered a nuisance for that special ability as well as his sense of justice, Kosai was isolated. He grew dejected with the police organisation. Now Dojima is in the spotlight as the hope of politics. On the other hand, a missing persons investigation is forced on Kosai. As he traces the missing person Hashizume with rookie detective Ishikawa Emi, he unexpectedly smells the scent of blood at a sophisticated garbage disposal facility. There is water there that dissolves DNA. The researcher Masaki Ryo of Japan Sustainable Environment Laboratory had been there. Kosai is convinced that Masaki “erased” Hashizume with superheated water (pressurised hot water). At that moment, a girl called Fujidera Risa who claims to know the criminal in the case 15 years ago appears before Kosai. Risa was assaulted by Dojima right before that incident. Her vitality and determination to bring a charge against Dojima despite her emotional trauma restores Kosai’s hopes and fires him up. With Risa’s help, Kosai entraps Dojima and attempts to get the truth from him. However, while Kosai is in the process of doing so, Dojima is killed by an accident caused by Risa. Wanting to protect her at all costs, Kosai resorts to a dreadful move after an inner struggle. That is to make Masaki “dispose” of Dojima’s dead body with superheated water. Masaki quickly does as requested to Kosai’s relief. But as Masaki puts out one life after another without guilt, his speech and conduct which is beyond that of an ordinary person, gives Kosai a very deep-seated fear and uneasiness which he had not sensed before...