Su Wan, who was sent to the seventh ward, soon discovered that this was not a mental hospital - the squirming red cordon, the white pills that turned to gray on the ground, the faceless man who appeared in the early morning, and the "monitoring bracelet" that only showed strange words all indicated that this was a cage where "fragments of alien gods" were held.
"Those who violate the rules will be 'watched.'" As patient No. 19'S traces were erased and a mysterious man in combat uniform broke in with a broken key badge, the countdown to "Day of Punishment" started. Su Wang must find the night watchman and collect the rule fragments within 72 hours, but the old Chen pretending to be crazy, the contaminated Ling Yue, and the head nurse hiding secrets around him, are they a help or a trap?
When the seventh ward itself is the most forbidden object, Su Wang can only use the rules as a blade and life as a shield to fight against the foreign gods with sacrifice and obsession, and uncover the truth about the Day of Punishment ten years ago.