Jack Walker is a former bullied nerd whose life gets turned upside down when his girlfriend starts hanging out with the new mysterious guy who just moved into his hometown of Moorefield named Stefan. Then when Jack and his grandfather try to save Victoria from being kidnapped his grandfather gets injured and later dies. The last words his grandfather says to to him are, "If you ever want to see Victoria again you must get to Vladimir Island and find my old friend Cassandra."After his grandfather's death Jack is left with his grandfather's journal, old steamer trunk and lots of unanswered questions. Jack reads his grandfather's journal full of yellowing brittle pages. He thinks that his grandfather's words in the journal can't possibly be true. But if not then how does he explain Victoria's disappearance. So he decides in order to discover the truth he needs to get to Vladimir Island. So Jack gets accepted to the exclusive private school Van Pyre High that is located there. In between classes Jack searches for Cassandra.Once Jack finds Cassandra, she tells him that in order to get Victoria back he has to step into his grandfather's shoes and finish what he started with Stefan. Jack feels that he isn't up to the task and feels powerless that the fate of the human world might one day rest in his hands. That day is now. The Administration for Monster Studies, a monster observing organization that his grandfather co-founded, informs him that Stefan and the Bloody Blade are coming for the Sun Amulet, a mythical object that makes the owner all powerful and immune to sunlight, that is hidden somewhere on the island.The only problem: Jack has no idea how to be a vampire hunter let alone save the world. Luckily he has all of the monstrous inhabitants of Vladimir Island to help him complete the task.