High in the Wind River Mountains where the lodge pole pines give way to short shrubs and wildflowers, live the Mountain Shoshone, also known as the Sheep Eaters. They are a peaceful people who want nothing more than to live separate from other tribes and the invading white man. They feel safe here, high above timber line, protected by the Toyawo, the powerful mountain medicine. Aggretta, a widow at only twenty summers has dedicated her life to becoming a medicine woman, taught by Kwinaa, the wise and feared puhagant of the Tukadika tribe. When a white trapper is found badly injured, Kwinaa brings him to the village and gives Aggretta the task of healing him. Jim, awakens after days of unconsciousness, which was filled strange dreams and nightmares, to find himself in a secluded Indian village high in the Wind Rivers. He marvels at the richness in the lives of this reclusive tribe. Little do Jim and Aggretta know that the mountain spirits are at work and this unlikely pair will be sent on a dangerous quest to find the lost memories of the ancient Tukadika.