The real world is being consumed by "supernatural sources of corruption." Every 49 days, a city transformed by the rules appears, and its residents collectively turn into inhuman monsters at midnight. The protagonist, Shen Yan, was an ordinary programmer until he witnessed his girlfriend die horribly in one of these cities and unexpectedly awakened "administrator" privileges. He is not the creator of the space ruled by the Main God, but a "bug fixer" deployed by a higher civilization. He must repeatedly enter the cities and solve their rules, all while concealing the truth that human civilization is on the verge of collapse.
