In 2026 after the cataclysm, the world is not fragmented, but overlapping. The real city is intertwined with the weird "world of delusion". Monsters and ghosts are no longer legends, but the embodied products of human mental illness. Meng Mo, a seemingly ordinary old book restorer, actually suffers from extremely severe "multiple personality split". However, each of his personalities is not a burden, but corresponds to a logical template that analyzes weirdness.
Facing the nightmares and man-eating monsters that roamed the streets, Meng Mo showed the ultimate "turtle type" characteristics: he was as immovable as a mountain, and could still spend hours observing the monster's attack frequency on the edge of life and death; he was extremely tolerant, and could withstand mental pollution with his body just to find the slightest flaw in analysis. With the "thinking puzzle" in his mind, he sees the collapsing world as a grand strategy game. While other awakened people fell in madness, Meng Mo was steadily turning each indescribable weirdness into his own "personality puzzle", repairing the devastated world in silence.