Lucy is a human. Boring. Normal. She has no idea that the supernatural world exists outside of fairy tales and myth. But when a demon attacks her in her home, she learns that the monsters from myth are real. She is taken in by a shadow organization, known as the Guardian Elite, a demon slaying organization almost as old as civilization itself. When it becomes apparent that her demon problem won't be easily solved, she is put under the protection of one of the organization's strongest members. Sebastian is an angel/demon hybrid. An Abomination. An outcast. For thousands of years, he has warred with his dual natures. Desperately trying to maintain the balance within himself. Killing demons was the only thing that gave him purpose. Even when the world turned their backs on him, he stood between humanity and the demons that would corrupt them. Until Lucy. She's a job. A distraction. Even as he attempts to keep her at arm's length, he finds himself drawn to her. His demon half wants to possess her. His angel half craves her heart. But there's a powerful demon on the loose, one that will stop at nothing to capture her. Will he be able to stop the demon? Or will Lucy provide too much of a distraction?