As the second son in the Duke of Carey's palace, Heather originally thought that she could live her whole life in confusion with that secret, but because of the emperor's fatuous order, she returned to the mundane world of the imperial capital. After the conflicts among the human race, the demon race, the god race, the blood race, and the elven race broke out, will Heather become a monster that destroys the world, or a god who saves the world? Demons and gods, who is justice and who is evil?