There is a gray seven-story apartment in the old neighborhood of Nancheng. The locals call it "Samsara Apartment". Not because it will reincarnate, but because the people who live in it will always see another self one night.
In order to find his sister who disappeared in the fire ten years ago, former detective Shen Ye followed the digital clues left by his father and moved into Room 2046. On the first night of his stay, he saw his dead parents in the mirror; on the second night, unfinished writing in blood appeared on the wall; on the third night, the cry for help of the deceased that was repeatedly replayed in Room 1046 came from downstairs.
Every room in the apartment is sealed with an obsession that cannot be rested: someone died seven times on the same day, someone was strangled to death by his own shadow, and someone was trapped in a perpetual cycle of wedding scenes. And all of this is related to a "life-extending technique" that has been passed down for thousands of years.
When Shen Ye and Gu Nian, a graduate student in folklore, teamed up to uncover the truth, they discovered that the most terrifying thing was not the ghosts—it was that every living resident in the apartment was hiding something.