Under the calm city, there are many spy shadows. Fang Nan was originally a cutting-edge member of the Secret Service, and formed a special agent team with the "Smiling Team" such as analyst Su Qiang and informant He Ming. The three team up to investigate a shocking conspiracy involving various countries, but they frequently encounter the underground network controlled by the villain Li Jiu and the intertwining forces of multiple parties. In addition to the confrontation between good and evil, the emotions and trust within Fang Nan's team are also tested, struggling between ideals and reality. Humor becomes their way of survival. After experiencing espionage, betrayal, revenge, and self-redemption, everyone finally uncovered the mystery, protected their loved ones, reinvented themselves, and embarked on a new life again.
