Korean War, winter 1950. In the frozen and snowy area of Changjin Lake, a bloody battle is about to begin between the elite troops of the United States and China.

Two boggling mysteries have occurred in a small town in Xinan. A female police captain joins hands with a young detective to conduct an investigation. Although a clear motive can be seen, the two discover a series of unknown secrets. One case involves a late-night ride hailed through an online platform that goes terribly wrong. As more and more clues resurface, the cases in the hands of the police hands become complicated and entangled. In a desperate attempt to find the real culprit, events closely link the past, present, and future of the small town.

The film is set in 1949, as the members of the Central Committee of the Communist Party of China prepare to establish a new Chinese state, the People's Republic of China.

The tale of one man who fought against the tyranny of a ruler and led his people in battle in the ultimate sacrifice for his country.