Akira Inugami is the only survivor of a clan of ancient monsters that counts on his superordinary powers to solve strange criminal offenses. After a collection of bloody killings carried out by a hidden force, Inugami reveals a conspiracy theory including a murdered cabaret vocalist, corrupt politicians, and a story by the J-CIA to harvest his blood in order to take his lycanthropic powers! At the same time, Inugami likewise finds the fact behind his household heritage, which he might not be the last of his kind.