A seraphim, bearing the name Léto, has been banished from the Lord's radiance. They are taken in by a group of Demons, calling themselves the Forgotten. They offer Léto an opportunity; all demons thirst for the sensation of Humanity. But the only way to achieve such a thing is to convince a mortal to give up their body, and take over the body as their own. Léto agrees to become human, hoping to once again find favor in the eyes of the Lord. But a satanic soul in a mortal body is full of nuance, and Léto will soon find themselves lost in the moral complexity of humanity, and question the true essence of what it means to be human.