In a small southern town dusted by time, the peace was broken by a bizarre series of disappearances. The missing persons are all young women, and they were last seen in old neighborhoods on the edge of the city. Only some seemingly unrelated mysterious symbols are left at the scene. Interpol Lin Xiaofeng took over the case. He has a calm and resolute personality. With his rich criminal investigation experience accumulated over many years, he was keenly aware of the unknown secrets hidden behind this case. During the investigation, he met Su Yue, a university professor who specializes in criminal psychology. Su Yue has a quick mind and is good at analyzing cases from the criminal's psychological perspective, providing Lin Xiaofeng with new detection ideas.
As the investigation deepened, they discovered that these missing cases were inextricably linked to an unsolved case many years ago. Dust-laden files were reopened, and witnesses and suspects from that year gradually surfaced. However, every clue is like a deliberately laid maze. Every time they think they are close to the truth, they fall into deeper trouble. What's worse is that as the investigation deepens, danger comes quietly. In pursuing the truth, Lin Xiaofeng and Su Yue not only have to face the cunning murderer, but also unravel the complex grudges hidden behind the case many years ago. In this darkest moment before dawn, whether they can successfully pursue the murderer and seek justice for the victim has become a huge suspense hanging over the small town.
