There is a strange dormitory numbered 404 hidden in the cracks on the fourth floor that the university deliberately erased. When I was forced to move in, I was given a cold check-in rule. The eight rules were like shackles, tightly binding the four residents who would always exist in the dormitory. Observing the rules was the only way to survive, but accidents happened one after another: the familiar cry for help outside the door late at night, the ghostly figure on the back in the midnight mirror, the eyes peeking behind the curtain of bed No. 3... When I broke all the taboos one after another, the terrifying truth under the rules was revealed. The fire tragedy ten years ago was completely buried by the school. The four souls who died tragically wrote the rules and sealed themselves. The living people who broke the rules will eventually be assimilated into the dormitory and replace their predecessors as new prisoners.
Purpose: The terrifying shell of ghost stories exposes the obsession and despair of human nature. Through the setting of infinite reincarnation, it explores the endless darkness that breeds after the tragedy is covered up, and warns of the price of prying into taboos.