Reyna is a demon, or to be more precise, a succubus. She is content with living her life away from other demons and among humans when she needs to feed. One day someone from her past comes to warn her of the mysterious disappearances and killings of demons which sends her on a quest to find out who or what is behind these killings. However, being a demon isn't easy. Neither is befriending them. Reyna will have to learn to get along with others; a skill she hasn't learned even after centuries of living. Who will catch up to her fastest? Her past? The darkness killing off demons? Or will it be her dooming fate that ends her first?