The world is changing. Monotheism is rolling across the world like a wave, driving the old gods into hiding; their followers converting the world by fire and sword.
Nathanial, an angel of vengeance and fire has been appointed the lord of Hell's Gate, the angel in charge of the judges who weigh those souls in doubt, but he's not convinced that he is right for the job. Nathanial abandons his newly appointed post, preferring to walk the earth as a mortal instead. He meets Iya, the priestess of a dying religion and falls in love. Semiazas, another angelic judge, steps into Nathanial’s place. He revels in power and longs for recognition and the souls he judges suffer as a result. As punishment for his lack of empathy and his lust for power, the Archangels strip him of his wings and send him to earth hoping he will find his compassion. The demons Asmoday and Mammon see this as their chance to gain control of the lord of Hell’s Gate and jump in to meddle with their lives. Though they seek the same end, their demonic natures keep them at odds even as they work to ensnare the wayward angels. Two angels. Two mortal lives. Two demons vying for control of the master of Hell's Gate and a world in flux. Heaven, hell and the mortal realms between will never be the same.