In 1976, in Tangshan, a truck driver Daqiang Fang lived an ordinary but happy life with his wife Yuanni Li and their twins Deng Fang and Da Fang. Daqiang was often away on business trips, and it was always difficult to come back home. One day in July, in the evening, when Daqiang finally came back home. On the road outside of the community, while Daqiang and Yuanni were hiding in the truck and being intimate, suddenly - an earthquake happened. In order to save the children, Daqiang died. Deng Fang and Da Fang were trapped under the same slab of concrete on both sides. If people wanted to save one, they would have to give up the other. Yuanni chose her younger brother, Da Fang, who had been sickly since childhood. While Deng Fang, who remained conscious, heard her mother's decision. After the earthquake, Yuanni raised her son alone and chose to live on strongly. Deng Fang, who survived the earthquake, was adopted by the couple Deqing Wang and entered an all-new world. The mother and daughter, as well as the sister and brother, thus parted ways.