The film tells the story of two families who had been through thick and thin together but were forced to become estranged because of an accident with a hidden story. They experienced pain and anxiety under the tide of the times, and their lives were full of ups and downs. In the end, they chose to face the truth and move forward with an open mind. The young Liu Yaojun and Shen Yingming were close friends. While their sons Shen Hao and Liu Xing were playing in the suburbs, Yaojun's son Liu Xing died unexpectedly, which completely changed the fate of the two families. The Liu couple went to the south. Many years later, they met again with old faces, and the hidden truth will eventually be revealed because of the openness of the younger generation. As time goes by, life rolls forward...