In the modern city, Sun Zhiyuan led the detective agency to be involved in four mysterious cases one after another. From the missing case of a rich man to the unsolved case on campus, to a serial case involving the interests of many parties. Behind the mystery lies social contradictions and unknown past events. Everyone responded to the crisis with humor, challenged their limits, and finally solved the shocking case. In the process, friendship, misunderstandings, challenges, and growth are filled with it. Together, everyone finds the path to the truth and themselves from the fog of doubts.
