Qi Ji and Qin Zhen originally met because they were investigating an old case twenty years ago. During the investigation of the old case, the two of them discovered various doubts and possible places. This is not only a test for them, but also a test of human nature.
After they solve the doubts, more conspiracies will occur. These conspiracies shroud all kinds of things between human beings and the underworld. Everyone's desires, their causes and consequences are borne by them.
There were some minor episodes during the process. Qi Ji was targeted. How to make decisions about the relationship crisis between Qi Ji and Qin Zhen, and how to develop the work with the underworld?
In the end, the two of them work together to solve the mystery, maintain various things between humans and the underworld, and develop together.
Purpose: The establishment of diplomatic relations and success with human beings and the underworld, how human beings make choices