Discusses the different wild horses that can be found around the world today, including Chincoteague ponies, Australian Brumbies, American mustangs, and the wild horses of Asia.
Visiting Zion National Park with his family, twelve-year-old Jack encounters two mysteries, the strange behavior of a band of wild mustangs and the possibly sinister actions of his new foster brother, a Shoshone boy.
In 1959 in Oregon, thirteen-year-old Mary Elizabeth rides with her father to kill the wild stallion that is luring away horses from their ranch and ruining their livelihood, but she secretly wants to save his life.
Sam, having promised to help care for a group of mustangs, feels overwhelmed with responsibilities and the situation gets even worse when a blind filly wanders off alone in a snowstorm.