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.
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.
Darby visits her great-grandmother, a healer who lives in the rain forest, connects with a wild mustang, and tries to mend the relationship between her two best friends, which was broken by a secret tragedy.
While vacationing in a beach house surrounded by wild horses on North Carolina's Outer Banks, two very different stepsisters who like the same boy must band together to prove his innocence when he is accused of committing a crime against the horses.
Samantha does not know what to do when her new friend Nicholas, a boy traveling cross-country on a Gypsy Vanner mare while learning about his gypsy ancestry, is suspected of being involved in the theft of a mustang.
