Ben, Emily and Jack are looking forward to Christmas back in London, and to celebrating their victory over the vampire hordes. But it is not to be. Camazotz, the new vampire god, may have been vanquished, but a new plague is gripping London's streets. The undead are rising. This new evil is more frightening than the last - the vile creatures seem impossible to kill. How can the friends hope to end the terror that is ripping through their city?