- Detective Takeo Kosai (Koichi Sato) is about to be demoted. He then plans to entrap Akira Dojima (Jun Kaname) without his partner Detective Emi Ishikawa's (Chiaki Kuriyama) knowledge. Akira Dojima kidnapped and killed a girl 15 years ago.
Things go awry when Risa Fujiidera (Mikako Tabe), who is helping Detective Takeo Kosai to frame Akira Dojima, kills Akira Dojima in self-defense. To protect Risa Fujidera, Detective Takeo Kosai turns to Ryo Masaki (Osamu Mukai), who is a researcher of trash decomposition. He is able to decompose even to the DNA level. Detective Takeo Kosai asks Ryo Masaki to dispose of Akira Dojima. What Detective Takeo Kosai is unaware of is that Ryo Masaki is a monster himself, carrying dark secrets.