One Demon. One Angel. One Hunter. One mission. Damian, son of famous Demon Hunter Chaos Constantine has set off to Japan on a high class escort mission for Shai Li, a assassin/ cult leader heading to Underworld. But during the meeting, something goes terribly wrong. Saint, a fallen Archangel has set his sights on killing Li. And nothing is going to stop him from doing it. When the Fallen Angel realizes that he is outmatched and flees the scene. Damian follows only to learn that the Fallen needs help. Dread's father has set the Unnatural, a elite group of age old assassins into Japan and only the three can stop it.