Mystery Case 1 "Murder by the River Fog": A male corpse was found in the Sanshui River. It was obvious that he was not the murderer, but he surrendered to the Public Security Bureau after being suspected and released.
Mystery 2 "Praying Mantis": On a rainy autumn night, two men drove to an abandoned farm in the suburbs to dig up corpses. A third man watched them from the darkness. The murderer is among the three.
Mystery Three: "Mountain Creepy": Zang Jinshi, who graduated from the Police Academy with honors, unexpectedly gave up his Great Expectations and returned to the small county where he was born, just to find out whether there is really a monster living in Lingzhu Mountain, and whether that monster is related to the death of his parents.