"The Princess in Black and the Science Fair Scare" is a children's book by Shannon Hale and Dean Hale. In this story, Princess Magnolia faces a new challenge at the annual science fair. While she is excited to showcase her project, trouble arises when a monster threatens the event. To protect her friends and the fair, Princess Magnolia transforms into her superhero alter ego, the Princess in Black. With the help of her friends, she must confront the monster and ensure that the science fair can continue. The story combines adventure with themes of friendship and bravery.