Ellie’s a girl who tells it like it is. That surprises some people, who see a kid in a wheelchair and think she’s going to be all sunshine and cuddles. The thing is, Ellie has big dreams: She might be eating Stouffer’s for dinner, but one day she’s going to be a professional baker. If she’s not writing fan letters to her favorite celebrity chefs, she’s practicing recipes on her well-meaning, if overworked, mother.

Lou Montgomery has the voice of an angel, or so her mother tells her and anyone else who will listen. But Lou can only hear the fear in her own voice. She's never liked crowds or loud noises or even high fives; in fact, she's terrified of them, which makes her pretty sure there's something wrong with her. When Lou crashes their pickup on a dark and snowy road, child services separate the mother-daughter duo. Now she has to start all over again at a fancy private school far away from anything she's ever known.

Hugo is not happy about being dragged halfway across the state of Colorado just because his dad had a midlife crisis and decided to become a ski instructor. It’d be different if Hugo weren’t so tiny and guys didn’t call him “leprechaun” and rub his head for luck. But here he is, the tiny new kid on his first day of middle school. When his fellow students discover his remarkable talent for garbology, the science of studying trash to tell you anything about a person, Hugo becomes the cool kid for the first time in his life. But what happens when it all goes to his head?

Sara Martinez is a hacker. She recently broke into the New York City foster care system to expose her foster parents as cheats and lawbreakers. However, instead of being hailed as a hero, Sara finds herself facing years in a juvenile detention facility and banned from using computers for the same stretch of time. Enter Mother, a British spy who not only gets Sara released from jail but also offers her a chance to make a home for herself within a secret MI5 agency. Operating out of a base in Scotland, the City Spies are five kids from various parts of the world.

Melody is not like most people. She cannot walk or talk, but she has a photographic memory; she can remember every detail of everything she has ever experienced. She is smarter than most of the adults who try to diagnose her and smarter than her classmates in her integrated classroom - the very same classmates who dismiss her as mentally challenged because she cannot tell them otherwise. But Melody refuses to be defined by cerebral palsy.