When Bo (Don Murray), a naive rodeo rider, meets saloon performer Cherie (Marilyn Monroe), he falls head over boots in love. After he literally lassoes Cherie onto a bus headed for Montana, where he plans to marry her, Cherie escapes off the bus - smack in the middle of a snowstorm. But if Bo can learn to rein in his emotions, he might convince Cherie to warm up to him...