Imagine stepping out of your home onto the streets of Boston and seeing inhuman beings walking down the road among the morning crowds of people. That's what Simon Kane sees every day. Fairies, goblins, and other mythical creatures live in our world, and normal humans see them as people like themselves. But Simon is not all human and is plagued by his emerging abilities. Born filthy rich and living off his father's wealth, he became a private investigator, taking only jobs that deal with the supernatural in the hopes of discovering something about who and what he really is.
As an occult expert, the police call him to consult on a case of a mother who believes her baby isn't human. When he arrives and proves to them that the woman is right, he is sent on a path that could lead him to gaining the information he has always sought. But when he gets mixed up in a conflict between magic and supernatural powers, his life expectancy takes a drastic turn for the worse.