Near Qishan, there is a city called Fufeng, which was once called "Little Nightless City". A long time ago, the city was full of lanterns, and the night was as bright as day. However, it is now shrouded in darkness, and there is a legend of "lighting a lamp to kill people". After the protagonist Wen Ning came to Fufeng City, he found many abnormalities as soon as he entered the city. The whole city was full of old, weak, sick and disabled people, and it was a depressed and dilapidated scene. When the night fell, Wen Ning deliberately lit a lamp to attract a ghost. Just as he was about to capture him, a blue sword light struck, and the black shadow took the opportunity to escape. Wen Ning looked up and saw a familiar figure rushing in from outside the door. It was his old acquaintance, Lan Sizhui, a descendant of the Lan family. Afterwards, Wen Ning and Lan Sizhui joined hands. After unremitting efforts, the two finally solved the mystery, captured the mastermind behind the scenes, and returned a peaceful world to the people.