The protagonist Yuan Zhenji crossed to the parallel world of Jiangshi, and found that this world was full of various horror and weirdness, and ordinary humans were as fragile as paper in front of them. He used a notebook called "Urban Legend Records" to create urban legends that affect reality, punish criminals and contain weirdness, absorb the weird rule ability "use magic to defeat magic", and become a monitor who fights against weirdness, and fights with his partners against the coming doomsday-level weirdness...