London, 1850. A frightened figure staggers down the gangplank of a newly arrived ship. His name is Ben, and what he has seen will haunt him for the rest of his life. Jack, a beggar boy, befriends him and listens to his story. It's a wild tale of archaeology,uperstition and a strange, fatal sickness. The two boys can't begin to understand what they face. London is on the brink of a terrifying vampire plague and only they can prevent total destruction...