Twelve-year-old human Sophie Dawes has a good life in Hopetown. There, vampires and humans exist in harmony, and Sophie and her adoptive vampire moms are living (or unliving) proof. Vampires must follow a lot of rules for humans to feel safe, but Sophie knows that a nightly curfew and regular visits from Child Protective Services are a small price to pay to keep her family together. But then normal, law-abiding vampires start turning feral and blood-thirsty...