The Below is a shadowy place, where the nightmares of humans have dwelt for thousands of years. Once in a while, a person will choose to visit. Photographer Sabrina Glass has chosen to live there. Along the way, she befriends the Poisons, half-demon guardians who keep the nightmares in the Below world where they belong. But someone has begun to murder the Poisons, one by one. Will Sabrina be able to stop the killer before the nightmares escape from Below and retake the sunlit world of humans?