In 1947, Yan Zhensheng, the owner of Beijing Qinfangju pickle shop, was killed by his brother who was robbed by the Nationalist army when he went to Hebei to buy soybeans. In order to fulfill his filial piety, Yan Zhensheng, who had been adopted by his uncle since childhood, wanted to marry another wife for his biological father, Mr. Yu, in addition to his wife Lin Cuiqing, to continue the Yu family line. Mr. Yu fell in love with Mu Chunhua, who was dedicated to curing his father's illness. Although he married her out of filial piety, Yan Zhensheng and Mu Chunhua gradually fell in love with each other. In 1950, the new marriage law was promulgated, and Yan Zhensheng and Mu Chunhua divorced. In the following decades, Yan Zhensheng, Mu Chunhua, and Lin Cuiqing's family still supported each other and shared the ups and downs.