Being only half-vampyre in a high school like Danny Gray's makes you a whole loser. But Danny manages to escape the worst of the hounding thanks to genetic treatments that mask his werewolf side. So far, he’s been able to live the privileged life of a vampyre. Vamps are society’s elite, while wulves like Danny’s father are less than second-class citizens. During the full moon they become inmates, forced to undergo their Change in dangerous government compounds. But Danny never had to worry about any of that. Until now. Lately, every time there’s a full moon, he’s been getting weird symptoms: keen night vision, skull-splitting headaches, and increased strength. Now his new girlfriend, a human named Juliet, is wondering what’s wrong with him.