Young Wolf wants to win the horse race at the tribal fair. So does Little Big Mouth. And that is how the trouble starts.

Can Young Wolf's colt, Snow Wind, run as fast as his father, the legendary wild white stallion? Young Wolf thinks so. But Little Big Mouth knows a secret about Snow Wind that could keep him from winning the race. Neither boy can imagine what he will win or lose.

For slightly older readers, Son of Spirit Horse is a continuation of the Step into Reading series about Young Wolf. The story of Young Wolf concludes with a historical novel, "Comanche Song," published by Eakin Press and chosen by the New York Public Library as a "Best Book for the Teen Age." Young Wolf's name becomes Tsena, the Comanche word for wolf.