He Chaoyan first entered the city as an intern in a high-tech company. Following a data theft incident, he was gradually involved in an abnormal phenomenon in the city: "Urban Crack" - when the city's underlying data and social structure are abnormal, ordinary people can trigger various singularity experiences after entering. With the respective experiences and growth of Meng Xiaowei, Cheng Weian, Zhou Ruixiao and others, multiple lines are intertwined: there are power struggles within the company, media fiction, emerging technology ethics, psychological mysteries, life "plug-in" experiences, etc. Each line has an independent and unique urban imagination. The wonders are constantly connected with other clues. In the end, all the clues are integrated into the main line "Brain Hole", revealing the invisible layers of mechanisms in urban society and the complexity of human nature. At the fusion of reality and fiction, the protagonist and others each choose their own way out and gain growth and answers.