Based on the true story of Nick Wilson, a young white settler who is accepted as part of the Shoshone Indian tribe and becomes an original Pony Express rider. When a Shoshone warrior "kidnaps" Nick and brings him back to the tribe, Nick learns how to become a warrior himself. But when a gang of settlers, including his brother, comes looking for him, Nick has to face the toughest decision of his life ... return to his real family or stay with the Indian family he has grown to love.