The world will randomly descend into "secret realms of rules" every once in a while. These secret realms are the "ideas" of ancient gods and demons, and come with their own set of rules that distort reality. As a result, the "Secret Keeper" organization has emerged in the real world, responsible for managing, researching and conquering secret realms, and maintaining social stability. Mo Yanlu, a philosophy student, was lying on his back in the study room. Weird stories about global rules suddenly came to him. The university town was dragged into the secret realm of "The Ancient Town of Dark Marriage", and those who were left alone died. . .
