Dazhi (Qiao Renliang) seems to be just an ordinary teenager, but his actual identity is a special agent criminal police lurking among civilians. Meng Xiaoling (Chen Jing) grew up with Dazhi in an orphanage since childhood. After adulthood, Meng Xiaoling's poor and miserable past made her have a desire and persistence for money beyond ordinary people. She seduced the local tyrant Du Haojin (Bai Kainan), and the two went to Italy to buy a lot of things. This move attracted a group of criminals who tried to use Du Xiaoling as a gap to take away all of Du Haojin's property. The rich man Li Zhenghua (Simon Yam) has always cooperated closely with Interpol. This time, he bought the Expo Old Street that Meng Xiaoling wanted to get to attract the attention of criminals. At the same time, in order to prove her ability, the rich girl Feifei (Zhang Xinyu) also lurked beside Du Haojin, because of a series of accidents and dangers and Dazhi became attached.