The sky in Qingwu City is always covered with a layer of gray fog that never goes away, and the red brick buildings in the old city hide unknown taboos. Lin Mo, a history student, moved into Building 3 of Meiling Community. Three yellowed rules notes, the strange music of the piano at midnight, and the knock on the door of an eyeless girl all involved him in a series of fatal and strange stories. When the iron rule of "don't open windows, don't open doors, don't peep" is broken, the gaps in the other world gradually expand, and the official secret organization "Anomaly Management Bureau", mysterious retired travelers, and evil organizations that control ghost stories appear one after another. Lin Mo escaped from death with the help of his "Rule Analysis Eye", only to discover that there is a forgotten truth hidden behind every ghost story, and he has already become a key piece in the chess game of ghost stories in Qingwu City - either break all the rules, or become a sacrifice of the ghost stories.
