Lin Wei, who had both Yin characters in his horoscope, killed his parents and was adopted by his master to retrieve their bodies. When he was 18 years old, he went to the Longmu River to retrieve corpses, but found a black coffin, thus violating the taboo. In order to save Lin Wei, the master entered the coffin and disappeared in the river. Under the narration of Bai Xinran, a girl from the archaeological team, we learned the purpose of the archaeological team and that it was all a plot.
