In the modern city "Star City", bizarre and bizarre events occur one after another: disappearing night walkers, unsolvable network mysteries, sudden strange spaces and changes in power. While assisting the police and media in their investigations, psychological counselor Fang Wenxi gradually uncovered multiple imaginary phenomena hidden deep in the city, and made acquaintance with a group of friends who also faced unusual difficulties in their respective fields. As the story progresses, multi-line narratives unfold: urban legends and reality are intertwined, the social power structure is quietly restructured, the boundaries between the network and the entity are gradually blurred, and those obsessed with the truth struggle in growth, redemption, betrayal and dilemma. They face the fog together, but each faces their own cracks and choices - ultimately uncovering the abnormal nature of the city and the inescapable connection between individuals and the times.