It's the first day of fly school, and Fly is very nervous. What if she's the only kid in class who eats regurgitated food? Fortunately, everyone else brings leftovers for lunch too. But that doesn't mean the first year of school isn't full of big challenges. From studying first graders in the wild to learning how to land in soup, the lessons are intense. And it's not easy to do schoolwork with 327 loud, annoying, and very messy brothers and sisters around! Even though she's little — just like her best friends, Worm and Spider — Fly wants to be a superhero. And why not? She walks on walls, sees in all directions at once, and is one of the best fliers on the planet. And, as Worm points out, the world needs all kinds of heroes, big and small. Doreen Cronin and Harry Bliss, the team behind The New York Times bestsellers Diary of a Worm and Diary of a Spider, bring warmth and humor to the story of a little fly who's not afraid to dream big. Really big.