Undead shopaholic Betsy Taylor has found that being vampire queen has more problems than perks. It may be easy to find blood in the dark of night, but try finding a strawberry smoothie. And employees at her nightclub Scratch have been giving her nothing but grief since she killed their former boss. Some people...But Betsy's "life" takes an interesting turn at a baby shower for her wicked stepmother, who lets it slip that Betsy has a long-lost half sister. Now twenty years old, this girl just so happens to be the devil's daughter and destined to rule the world.