A young woman motoring across the western plains intervenes in an ambush to rescue a lone besieged man, triggering a sequence of frontier episodes. Subsequent chapters follow social gatherings, hospital scenes, hunting and sporting contests, cattle-country rivalries, and disciplinary reckonings that bring in military aid from West Point. Encounters with family and romantic interest complicate loyalties while rescues, chases, and showdowns probe courage, honor, and survival in an open landscape. The action and social scenes are woven together toward reconciliations and a final lovers' meeting.