In the winter of 1917, nineteen-year-old Martha Lessen saddles her horses and heads for a remote county in eastern Oregon, looking for work “gentling” wild horses. She chances on a rancher, George Bliss, who is willing to hire her on. Many of his regular hands are off fighting the war, and he glimpses, beneath her showy rodeo garb, a shy but strong-willed girl with a serious knowledge of horses.