During the 2nd Sino-Japanese War, orphan Lu Feng returns to Shanghai as a Communist undercover agent, tasked with infiltrating No. 76 Headquarters. There, he crosses paths with the mysterious Hua Xiang Yu and his childhood friend Huo Fei, both hiding secrets of their own. As they circle each other in a dangerous game of loyalty and deception, these hidden agents must decide what they truly stand for, risking everything to fight for a better future.

Black Girl is a deaf-mute prisoner. Prison guard Deng Hong found White Fox, a prisoner who understands sign language, to supervise her transformation. The two made money together after serving their sentences, met Deng outside the prison.

On the day of the 1949 Founding Ceremony, Xiao Dali (Lei Jiayin), who has just entered the city to be reorganized as the head of the public security police station, discovers that Feng Jingbo (Hu Ge), an elementary school teacher, is suspected of being suspicious. With the high alertness of a soldier and the sense of responsibility of a public security warrior, he is hard-partnered with Feng Jingbo as a neighbor, exhausting his life through trials and tribulations, and carrying out a nearly four-decade tracking without complaint or regret. The movie is based on Zhang Ce's novel.

本剧以当代女性都市生活为背景，讲述了五个成长经历、性情禀赋各异的女性共同建立友谊、打拼事业、收获爱情的都市情感故事。鼓励了众多都市女性在困境中不忘砥砺前行的决心，表现了女性在都市奋斗中的生活百态和诚挚友情，呈现出现代女性更加独立、追求个人价值的新面貌。台词风格自成一派，原汁原味的现代北京话。