Angels and demons have been at war since the beginning of man. Each human has a guardian angel, or a cynical demon protecting them... except one that is. Lennon wasn't born with either, and when faced with death, he is offered a contract for a job: becoming a reaper. As reapers are meant to slay angels and demons, acting as mediators on this war for humanity, Lennon discovers the truths about himself, and this never ending war.