Introduction：This drama tells the story of Chen Changping, an undercover agent of the anti drug police, who lurks next to Tan Zilong, the only son of Tan Xiaoshan, in order to arrest the criminal gang of drug lord Tan Xiaoshan. He repeatedly saves Tan Zilong's life and gains his trust. Chen ChangpingSaving the little sister and her son who were devastated by drug trafficking, Chen Changping relied on the sister to contact Li Zhengbin. In the eyes of others, Chen Changping and his younger sister seem to have a married relationship. As soon as Chen Changping's incident occurredNotify the younger sister to leave, but Tan Xiaoshan discovers it. Tan Xiaoshan kidnapped Xiaomei and Mingming, and cut off the possibility of communication with Li Zhengbin. Chen Changping had no choice but to gamble and sacrifice police officer Yu Zhenhai's previous planThe unique password and the transmission of information by Li Zhengbin. To ensure the safety of his younger sister and Ming Ming, Chen Changping had to take risks alone and go to the Zhaka Drug Base, which had coveted Tan Xiaoshan's influence for many years, to negotiate and rescue Tan Zilong.At the final critical moment, Chen Changping and Li Zhengbin joined hands to capture Tan Xiaoshan and his son, ending this "hunting operation".