Speed and self-confidence, that’s Astrid’s motto. Nicknamed “the little thunderbolt,” she loves to spend her days racing down the hillside on her sled, singing loudly as she goes, and visiting Gunnvald, her grumpy, septuagenarian best friend and godfather, who makes hot chocolate from real chocolate bars. She just wishes there were other children to share her hair-raising adventures with. But Astrid’s world is about to be turned upside down by two startling arrivals to the village of Glimmerdal: first a new family, then a mysterious, towering woman who everyone seems to know.

J.D. has a big problem - it's the night before the start of third grade, and his mom has just given him his first and worst home haircut. When the steady stream of insults from the entire student body of Douglass Elementary becomes too much for J.D., he takes matters into his own hands and discovers that, unlike his mom, he's a genius with the clippers. His work makes him the talk of the town and brings him enough hair business to open a barbershop from his bedroom.

Eleven year-old Peter Lee has one goal in life: to become a paleontologist. Okay, maybe two: to get his genius kid sister, L.B., to leave him alone. But his summer falls apart when his real-life dinosaur expedition turns out to be a bust, and he watches his dreams go up in a cloud of asthma-inducing dust.

Nory Horace is nine years old. She's resourceful, she's brave, she likes peanut butter cookies. Also, she's able to transform into many different animals. Unfortunately, Nory's shape-shifting talent is a bit wonky. And when she flunks out of her own father's magic academy, Nory's forced to enter public school, where she meets a group of kids whose magic is, well, different.

Link, Michael, and Dana live in a quiet town. But it's woken up very quickly when someone sneaks into school and vandalizes it with a swastika. Nobody can believe it. How could such a symbol of hate end up in the middle of their school? Who would do such a thing? Because Michael was the first person to see it, he's the first suspect. Because Link is one of the most popular guys in school, everyone's looking to him to figure it out. And because Dana's the only Jewish girl in the whole town, everyone's treating her more like an outsider than ever.