This drama is set during the revolutionary time in Shanghai, based on a novel of the same name of Hai Fei. During the republican revolution, Chen Shen is a secret agent under Special Operations Executive Director Bi Zhongliang, among the agents called “sparrow” (similar to the program “zero” in Japan)

During the difficult period from 1937 to 1945, two generations of three intellectual families in Peiping make choices and sacrifices in the face of great turmoil and changes of the times. Some people choose to protect Chinese culture and continue the cultural bloodline. There are both idealists and realistic activists. They try their best to save the nation and survive, and actively search for a way out for the country, and finally head towards the light.

In 1943 Shanghai, military agent Chen Qian, tasked with assassinating a Japanese official, uncovers a conspiracy. Disguised as a Japanese envoy, he infiltrates enemy territory, relying on the help of Communist Party member Chun Yang to thwart the invaders' plans.

Set in the Shanghai Shores at the beginning of the 20th century, where warlords begin to seize their powers; many heroes emerge, and revolutionary movements begin to rise. Making use of their wealth, the influential Rong family often abused their powers to commit various heinous crimes. In order to uphold justice, Feng Shizhen decide to embark on the road of revenge. She successfully sneaked into the Rong family, and became a tutor of the young master Rong Jiashang. However, in the midst of testing and making use of each other, Feng Shizhen slowly finds herself falling for the enemy's son. When the truth of the injustice and grievances that happened twenty years ago begin to surface, the two lovers who were initially in two different camps work together to brave through numerous hurdles, and ultimately reveal the shocking truth.

In 1949, the People's Liberation Army launched a successful offensive across the Yangtze River, breaking the Nationalist defenses. Deng Xiaoping led efforts to train young cadres and restore the southwest, achieving unity and rapid development in the region. Through their dedication, soldiers and cadres played a crucial role in transforming and rebuilding southwestern China.