Crazed vampire hunter Martin Keller is on the loose, determined to kill the last vampire and cut up his body for medical research. But by the time Sophie Hart learns of this dangerous plan, it might be too late: Patrick, the only vampire left on Earth, has been killed, and the hunt is on for his corpse. Teaming up with Patrick's father Vincent, Sophie has to ensure that Martin Keller never gets his hands on Patrick's body. But is there anything Sophie can do to stop Keller, whose only wish is to uncover the secret of the vampires so that he can turn himself into one of them?