"Rose Marie Lemaitre (Ann Blyth) is a beautiful, headstrong tomboy, raised in the rugged mountains of the Northwest Territory and used to fending for herself. Upon the death of her father, Rose Marie becomes the ward of Sgt. Mike Malone (Howard Keel), who takes her to live in the Mountie fort. Resentful at first, she soon grows to love both life at the fort and Sgt. Mike. However, Mike is soon forced to realize that the fort is no place for the lovely young woman that Rose Marie has become and brings her to 'Lady' Jane Dunstock (Marjorie Main), who instructs Rose Marie in the womanly arts."