Despite the disapproval of his parents and his formidable science teacher, nine-year-old Allen determines to do his science project on human photosynthesis.

Little Willy's Grandfather is sick, and it's up to Willy to save their farm from tax collectors. Their only hope is the prize money from the National Dogsled Race. But a lot of other people want to win the race, too, including Stone Fox, who has never lost a race in his life.

Do Willy and his dor Searchlight stand a chance against the toughest racers around? Can they win the race to save the far, -- and Grandfather -- before it's too late?