Neither Lizzie Brown's job as a preschool teacher, nor her biker witch granny, nor her talking terrier have prepared her for ancient demon-fighting hocus-pocus. So she decides to write her own manual, The dangerous book for demon slayers. When Dimitri, her shape-shifting griffin "protector," turns out to be no match for soul-stealing succubi taking over Las Vegas, Lizzie must figure out how to save him and Sin City.