Folks say that some numbers are unlucky.
4 Is close to "death", 7 is the first seven, 13 is unoccupied, 14 is like "dying", 18 leads to hell, 49 is the time for the soul to return, 73 and 84 are the hurdles that the old man cannot overcome, and the deceased is truly sent away after 108 bells ring.
Lin Zhaoye originally only regarded these as folklore research materials.
Until he received an old building file.
Building No. 17, Qinghe Lane, is registered as having six floors, but there is no fourth floor.
When Lin Zhaoye investigated this old building with "no fourth floor", he discovered that the successive supernatural cases in the city were related to taboo numbers.
Behind every number, there is a real-life man-made disaster and a hidden name. There are people in the dark who are constantly handing "solutions" to greedy, desperate or indebted people, and then taking something away from the price they paid...