On the edge of a quiet town stands an abandoned old mansion, radiating an eerie presence. Every night, when the clock strikes midnight, piercing cries ring out from inside, followed by bizarre murders. Lin Yu, a young police officer whose childhood trauma has left him with an unrelenting fascination with paranormal cases, volunteers to investigate the terrifying incidents.
The first case takes place in the mansion's basement. The victim's body is horrifying, their eyes wide open as though they had seen something utterly terrifying before they died. Strange symbols cover the area, seemingly left behind by some sort of mysterious ritual. While investigating, Lin Yu constantly feels a pair of eyes watching him from the shadows. Every time he gets close to a crucial clue, he receives an anonymous, horrifying text warning him to stop investigating.
Soon after, another murder takes place in the town library. The victim is found dead in a corner piled high with banned books. An open ancient text beside them is covered in bloody prophecies that match the details of the case with shocking accuracy. As Lin Yu pursues the truth, he discovers that the murders are connected to a mysterious ritual held in the town many years ago, and that some supernatural force seems to be controlling everything from behind the scenes.
As the investigation deepens, Lin Yu discovers that his own childhood memories are closely connected to the cases. He is repeatedly dragged into a dangerous whirlpool, while the terror brought by the midnight death knell follows him like a shadow. Can he cut through the layers of fog, unmask the mastermind, and unravel secrets buried for years amid these horrifying, shadowy crimes? The answer remains unknown.
