In the wilderness lake country of northern Minnesota, an orphaned twelve-year-old girl and a wolf pup share a rare bond.

Bronx middle-grader Addy, who struggles with a family tragedy by drawing maps and studying mazes, joins other city youngsters on a wilderness adventure in California that turns deadly when wildfires erupt.

McKenna Barney is trying to hide her worsening eyesight and has been isolating herself for the last year. But at the request of her little sister, she signs up for a commemorative mail run race in the Canadian wilderness-a race she doesn't know if she can even see to run. Winning would mean getting her disease-and her sister's-national media coverage, but it would also pit McKenna and her team of eight sled dogs against racers from across the globe...