After fighting in PTU for a year, Li Boqiao (played by Chen Jianfeng) joined the Stormtroopers, while Zhong Liwen (played by Wu Zhuoxi) joined the Special Duties Unit. The two have very different styles of doing things. Boqiao has been promoted one after another, while Liwen always pays for his impulses. Jiang Shixiao (played by Michael Miu), who has been in prison in Taiwan for ten years, was released from prison and was taken back to Hong Kong by Jinxing boss Du Yitian, ready to be entrusted with important tasks. However, he was dissatisfied with Laughing brother (played by Xie Tianhua) and provoked everywhere. During this period, Liwen met the pirated sister Jiang Youyou (played by Elanne Kong) in order to crack down on the drug factory. The latter happened to be Jiang Shixiao's long-lost daughter. With the matchmaking of sister-in-law Cheng Ruoxin (played by Zhou Haimei), the father and daughter finally recognized each other. Jiang Shixiao also returned the favor and found Cheng Ruoxin's mother Hua Jie. Hua Jie's daughter Hua Ruobao was scolded mercilessly by Li Sir at Car1. Fortunately, Boqiao's consolation was resolved, and the two secretly fell in love. At the same time, Liwen and Youyou also acted out their fake play, one played the little princess and the other played the lucky prince. At this time, Liwen was ordered to be an undercover agent in Jinxing and join Laughing, who wandered between Jiang Shixiao and Cheng Ruoxin, both good and evil...