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年轻夫妻卢小雪和海春捡到一个患有罕见血液病的弃婴路路，为抚养孩子并给她治病，他们花光了所有的积蓄，又卖掉房子和苦心经营的大排档，但还是难以挽救孩子的生命，严酷的现实又导致夫妻之间的激烈争吵，小雪自己的孩子也不幸流产，在走投无路之际，他们得到社会的帮助，夫妻俩还是坚定信念，一定要救活路路。...

It tells the story of the first generation of public security soldiers in Shanghai around 1950, who struggle against Chiang Kai-shek's secret agents’ attempt to overthrow the New China. It revolves around two men teaming up: an intelligent young cop, who is unsuccessful in the old society but is reborn and matures in the New China, and an old and experienced Chinese Communist Party agent....