Reporter Lin Yan never thought that his parents' "accidental car accident" twenty years ago would be related to the ancient house at No. 74 Huaian Lane. Until a mysterious and threatening text message dragged him into the alley that was shrouded in thick fog all year round. Three young people disappeared here one after another. The last images that appeared on the surveillance camera were all wrapped in white fog, as if they were swallowed by an invisible thing.
The aged face of the gravekeeper of the ancient house is covered with strange wrinkles, there is a sticky friction sound from the bottom of the well, and dark red drops of liquid seep from the cracks in the wall. The underground drawings among the parents' belongings and the scorched warnings from the grandmother all point to the same taboo: there are things hidden in the well that are maintained by blood.
When Lin Yan fell into the dry well, and the rotten bones and the broken jade pendant of the same model as his mother emerged in the darkness, he realized that he was not here to reveal the secret, but the sacrifice that "it" had been waiting for twenty years. The black dust in the fog, the moving shadows, the blood stains on the old sleeves... All the clues say: No one can take away the truth alive after entering Huaian Lane.
