Pearl is a sixteen-year-old vampire ...fond of blood, allergic to sunlight, and mostly evil. That is until one night she encounters a unicorn and he stabs her through the heart with his horn. Oops. Her family doesn't believe her (because obviously unicorns don't exist), but when Pearl reveals she can now withstand the sun, they are thrilled. She can be enrolled in high school, make friends and then lure these tasty snacks to her family! But Pearl's change is deeper than her family realise. She has started to experience a number of alarming symptoms including feeling sympathy for her meals - the humans. While struggling with balancing high school, her family and her new conscience, Pearl learns that the Vampire King has a seriously evil plot in store for the local humans - and that her good-looking new friend Evan is the were-unicorn that stabbed her through the heart.