Seven years ago, Lin Shen lost his memory in a landslide in Wu Town. The only clue was a scar on his left arm that looked like a flying bird. Now, he returns to his hometown as a criminal profiler, but encounters a series of disappearances - the same bird symbol is engraved on the doors of the victims' houses.
Su Wan, a doctor in the small town, is his old acquaintance and a survivor of the landslide. She always receives anonymous anatomy diagrams at midnight. The order of organ removal in the pictures perfectly matches the time of disappearance of the missing person. When Lin Shen discovered that all the missing persons were related to the accident seven years ago, they were forced to sneak into the cursed "Eternal Night Mine". Deep in the mine, the truth buried by time gradually emerged: the so-called landslide was a sacrifice, and they, the "survivors", were just sacrifices waiting to be harvested.
