The rule domain comes to reality, and all selected people will receive a copy of the rules. Only by obeying the rules can you leave alive; if you break the rules, you will be slowly forgotten by reality. On the first night when Lin Zhou moved into his old community, he received a note: Do not look in the mirror after midnight. But he soon discovered that he could see hidden red prompts that others could not. Others can only guess whether the rules are true or false, but he can see the way out behind the rules. From the midnight mirror to the thirteenth floor of the elevator, from the night shift convenience store to the unmanned hospital, Lin Zhou discovered step by step that the rule domain was not the beginning of disaster, but a screening.