Winter 1999: A series of disappearances occurred in an abandoned factory on the outskirts of the city. Three young people disappeared. Only a copper ring with the word "heng" engraved on the scene was left. The police traced the case for half a year to no avail, and it became an unsolved case.
Winter 2019: In an accidental case of bones at a demolition site, DNA comparison directly led to a person who disappeared in 1999, and an old case that had been dormant for twenty years was forced to be reopened.
The heavy snow buried the murder, and time buried the sinner. He spent twenty years waiting for the truth.
