在抗战期间，华声歌咏队积极参与前线的宣传活动。在黔桂撤退的过程中，女队员梅春丽（王人美 饰）与大队失散，与投机商人吴警之（赵丹 饰）相遇。在共同面对困境的过程中，两人结伴同行。吴警之对梅春丽献殷勤，并在抵达重庆后与她结为夫妻。
然而，事情并不如表面看起来那样美好。梅春丽后来收到了歌咏队的来信，希望她能尽早回归。她同意了并写信回复，但吴警之却私下撕毁了这封回信。此后，他开始阻止梅春丽与外界交流。抗战胜利后，他们回到上海，吴警之因国难而发家致富，生意规模逐渐扩大。在他们结婚四周年的庆典上，吴警之摆设盛大宴客，但酒后他的干妈起哄要梅春丽上台献歌，梅春丽拒绝了。这导致宴会气氛瞬间变得尴尬，夫妻之间的矛盾也因此激化。

A New York City businessman meets a window washer hoping to commit suicide and decides to market his grief to the highest bidder in this acidic satire on American capitalism, one made even more memorable by the fact that the entire “American” cast are Chinese actors in whiteface. The greedy Mr. Butler (Shi Hui) convinces the suicidal “Charley” that he might as well endorse some cigarettes as he jumps out of his office window, and maybe wear a particular suit too. A true cinematic oddity, this Korean War–era propaganda piece is a satire that Frank Tashlin could envy.