The love and regret of a university professor, the helplessness and forbearance of a female host, the strength and growth of a female college student, the joy and sadness of an entrepreneur, the wandering and loneliness of a singer, they interpret their different but intertwined lives in a bustling city, and the history of It poetically shows the living beings of people from all walks of life in modern urban life, directly touching people's hearts, and arousing people's strongest empathy. Rather than being a novel, it is better to say that it is a record of the real life and humanity of all living beings who are struggling for survival and how to redeem themselves.