After traveling with Mr. Crepsley, the vampire who made him into a half-vampire, Darren returns to the freak show known as the Cirque du Freak and continues to fight his need to drink human blood.
Darren, Evra, and Mr. Crepsley leave the Cirque du Freak and get a taste of the city, but when corpses drained of blood are discovered, Darren and Evra must confront a dangerous creature of the night.