Zhou Xu, an urban emergency maintenance intern, received a maintenance order that did not exist and walked into the 13th floor of an apartment with only 12 floors. He discovered that within every set of deadly rules was a false rule. After seeing through the lie, he can intercept the abnormal ability and make it into a one-time rule card; the price is to be gradually remembered by the abnormality. In order to find his brother who disappeared three years ago, Zhou Xu and the calm operative Lin Jianwei broke into subways, hospitals and erased urban areas, only to find that the entire city was being rewritten by a set of rules without exceptions.