In order to investigate the truth about her mother's "suicide", Shen Zhiyi sneaked into the Lu family related to the case and reached a "fake marriage agreement" with Lu Chen. After their marriage, the two gradually discovered during their joint investigation that the cases back then were related to many bizarre incidents today, and their marriage had actually become a part of some people's manipulation of the chess game. As the truth approaches, trust collapses and the two are forced to separate. In the end, the female protagonist uses wisdom and courage to break the situation, and the male protagonist puts aside his pride and pursues his love, achieving a "reunion"
