Owen is the chosen monster hunter, given powers equal to a demon at the age of 15. Ze ran away from Ireland to live in the United States with zir grandparents after zir job as a monster hunter lead to tragedy in zir personal life. Xe wants to abandon the entire monster world and live a normal life once again, but xyr past continues to haunt xem even after moving to the other side of the ocean. Zir old overseer, Quinn, has followed xem in order to make sure xe continues protecting the human world, and she's not the only one who has their eyes on xem.