In the modern city of "Hengzhou City", unsolved cases have occurred one after another, and official investigations are subject to power and systems. Song Qi brought together all kinds of "marginal people" to form a folk reasoning team. They are involved in a series of confusing cases: murders, disappearances, financial sleaze, medical mysteries, school violence, distortion of human nature... Each has its own main line and is intertwined with each other. The past and secrets of each member gradually surfaced. In the entanglement of collaboration and division, good and evil and justice, the team challenges reality and reveals the truth. The ultimate mystery affects the fate of the whole city, and everyone has to face their own redemption, which also triggers social reflection. The plot structure is multi-threaded, and each volume is both independent and echoes the main line, finally converging on the original "truth under the fog of mystery".
