College student Lu Jianshen is chosen as the Dragon Kingdom's selected one and enters the rule-based horror scenario “Happy Town.” During his first mission, he unexpectedly discovers that he possesses a “Rule Space” that can grow. At first, it's merely a ten-square-meter safe house where he can temporarily store items. But by absorbing “logical paradoxes” and “uncanny essence” from the world of rules, it can continually evolve and expand, and even simulate and deduce rules. While selected ones from other countries are tearing their hair out trying to figure out a single rule, Lu Jianshen is already using his space to analyze loopholes and invade the core of the horror scenario. While other spaces can only store things, his can “contain” the uncanny. When the world faces the unsolvable S-rank horror scenario “Evernight Bell Tower,” selected ones from countries around the globe fall one after another. Lu Jianshen's Rule Space has already evolved the “Eye of Logic” and the “Spear of Paradox.” He represents the Dragon Kingdom, standing at the final boundary between human civilization and the annihilation of the rules.