In the era of medieval Japan, cultural arts flourished, territorial wars were waged, and man and demon co-existed! While attempting to retrieve a lost falcon for his feudal lord, bird handler Zushonosuke encounters and becomes irresistably drawn to Tomihime, the supernatural inhabitant of a cursed castle. As a forbidden love between a mortal and a long-forgotten goddess begins to take hold, the horrifying existence of "Forgotten Gods" who feed on humans is soon revealed, inevitably leading to a deadly clash between the shogun's army and the clan of "Forgotten Gods." Amidst the escalating chaos, will Zushonosuke ultimately sacrifice his humanity for his love over Tomihime?