In 2009, the female knight Feiying (Michelle Yeoh) who likes to fight against injustice often punishes evil and is deeply loved by the citizens. Her superficial identity is the socialite Lulu. The police chief believes that Feiying's arrogance undermines the dignity of the police force, and finds detective Wenren (Richie Jen) to capture Feiying. During the operation, Wenren met his junior Lulu by chance. Because they had not seen each other for a long time and did not know each other's life, he did not immediately associate Lulu with Feiying when they met again. One day, one of Lulu's suitors, Dr. He Cong, was kidnapped by a female thief (Li Bingbing). Lulu chased after him relentlessly, but she was defeated in the end. Her actions aroused Wenren's suspicion. Wenren explored clues from He Cong's assistant and concluded that the case was related to Xia Mujun, chairman of Xia Mu Group of the Sun Country. In the operation to rescue He Cong, Lulu once again showed her extraordinary skills. Wenren began to associate Feiying with her more comprehensively, and the relationship between the two became very subtle.