On a hot summer afternoon in New York, Emma Jones gossips with other neighbors in her residential building about the affair that Mrs. Anna Maurrant and the milkman Steve Sankey are having. When the rude and unfriendly Mr. Frank Maurrant arrives, they change the subject. Meanwhile, their teenage daughter Rose Maurrant is being sexually pressured by her married boss Mr. Bert Easter. She does however very much like her kind young Jewish neighbor Sam, who has a serious crush on her.　　The next morning, Frank Maurrant tells his wife that he is traveling to Stamford on business. Mrs. Maurrant meets the gentle Sankey in her apartment, but out of the blue Frank comes back home. He realizes his wife is upstairs with Sankey, and runs upstairs. We hear shots and see the two men struggling as Sankey tries to escape through the window. Maurrant runs out with a gun. He has killed Sankey and fatally wounded his wife.　　Maurrant is apprehended and is led away by police. He apologizes to his daughter Rose, who will now have to take care of herself and her young brother without either parent. Rose's boss offers once again to set her up in her own apartment, but she refuses. Then she sees Sam, and tells him she wants to leave the city. Sam pleads with her to let him go with her, but she tells him it will be better for the two of them to have a couple of years apart before they consider becoming a couple. Rose walks off down the street by herself.

故事发生在美国西部大开发时期，燕西（理查德·迪克斯 Richard Dix 饰）带着妻子莎布拉（艾琳·邓恩 Irene Dunne 饰）千里昭昭来到了广袤而又荒芜的俄克纳马拉，心里怀揣着远大的理想，希望能够在这里做出一番建树。 　　俄克纳马拉的生活环境十分艰苦和险峻，然而，夫妻两人同心协力，慢慢改善和建立着他们的家园。在日子渐渐稳定的过程中，在当地生活的牧场主们感到他们的利益受到了侵犯，他们常常会找燕西的麻烦，却又被燕西用智慧巧妙的化解。燕西十分同情在当地生活的印第安土著，与此同时，嫉恶如仇的燕西亦对压迫和剥削原住民的资本家们充满了仇恨，随着时间的推移，双方的矛盾渐渐尖锐起来。