Teenagers, Brooke Anne and James, are strong competitors who train dogs to win in North American dog-sled races. Besides racing, great challenges come from a prize lead-dog gone deaf, a grizzly bear on attack, a crash through Yukon River ice, and a charging moose. Experiences are either told by Brooke Anne or by James. Their adventures bring danger, outstanding dogs, tests of culture, and a glimpse of lives evolving.