The movie "Top Secret Pursuit" tells the story of a new type of drug spreading in Lianjiang City. Anti-drug police Cao Renfan unravels the truth. On the other side, undercover agent Feng Yun is looking for opportunities in the drug den. The two, one bright and one dark, finally smashed the whole conspiracy, but the price was Feng Yun's sacrifice. Carrying the pain, Cao Renfan took Feng Yun's police number and went to the front line of drug control. In addition to the thrilling action scenes, hot and shocking gun battles, and thrilling street car chases, which make the audience's blood soar, this film also shows the sacrifice and dedication of the front-line drug police, and the harm of drugs to society and families. Once again emphasize to the audience to stay away from drugs and cherish life.