The Sea of Grass

Lutie Cameron (Katharine Hepburn) arrives in New Mexico, having married cattleman James Brewton (Spencer Tracy) after a short courtship. She finds that her husband is considered a tyrant by locals for jealously guarding his million acres of land, the "Sea of Grass," against homesteaders. Lutie is unfaithful to him with his enemy, liberal lawyer Brice Chamberlain (Melvyn Douglas), and conceives a son. When James finds out, he orders her to leave -- without her two children.