Mackie Doyle IS the replacement. Mackie is not one of us. Though he lives in the small town of Gentry, he comes from a world of tunnels and black murky water, a world of living dead girls ruled by a little tattooed princess. He is a Replacement--left in the crib of a human baby sixteen years ago. Now, because of fatal allergies to iron, blood, and consecrated ground, Mackie is slowly dying in the human world. Mackie would give anything to live...

Daphne is half-demon, half-fallen angel, her brother, Obie is kidnapped and she realizes she might be partially responsible, so she travels to the vast streets of Earth to find him.