Synopsis: In the late 1880s, Jim and Kate Tanner along with their sons Virgil and Andrew move from Pittsburgh to a farm in Wyoming, where they find the ranch in dilapidated condition. To make matters worse, Jim learns from the trapper Thompson and his Shoshone companion Two Dog that the source of the water for his land runs through property owned by the powerful rancher Ab Cross, meaning Jim is at Ab's mercy. Ab is uncooperative and refuses to stop letting his steers graze on Tanner land