Akira Inugami is the only survivor of a clan of old monsters who depends on his supernatural powers to address mystical criminal activities. After a series of bloody murders perpetrated by a hidden force, Inugami discovers a conspiracy theory entailing a killed cabaret vocalist, corrupt political leaders, and also a plot by the J-CIA to harvest his blood in order to swipe his lycanthropic powers! At the same time, Inugami likewise discovers the truth behind his household heritage, and that he might not be the last of his kind.