An ancient powerful being that secretly shaped civilisation as we know it. Using a supernatural form to perform its duties over centuries. This being is known by many names: the black cat, the tailed one, the blackened tiger and others in languages only known to demons and ghouls. The being has revealed its true name to only a few. Unable to maintain a stable form in this earthly realm inhabits the bodies of felines, to select and raise a human to carry out its work. Jade, a ordinary teenager has been chosen to carry out the most dangerous task that the being has undertaken. Jade has to choose between her hope for humanity and the absolute decision of the being.