Fourteen-year-old Brady and his cousin Quinn love extreme sports, but nothing could prepare them for the aftermath of Brady's close encounter with a meteorite after it crashes into his Black Hills, South Dakota, bedroom.

Meat-eating and vegetarian dinosaurs compete in surfing, skateboarding, and snowboarding events.

When Mia Cox finds out she can't donate her kidney to save her younger sister's life, she doesn't hesitate to jump on a plane to New York, convinced she can talk their estranged birth mother, Carmen, into donating hers instead. She doesn't know the city or how she'll find Carmen when she gets there, but she has to try. If she doesn't, Maddy's going to die.
On the cross-country flight, Mia figures she'll have more than enough time to make a plan...