This film is a prequel to the movie "Northeast Police Story", created by the original team. The story tells of a Northeastern police officer named Li Hongqi (played by Xie Miao) who is as jealous of evil as enemies. During a blind date, he accidentally discovers that the local pornography industry is involvedThe existence of the industry chain, as the investigation deepens, a huge pornographic 'empire' that controls and exploits women through drugs has emerged. Apart from his life being repeatedly threatened, he never imagined that his best brother would also be involved in itIn the face of innocent victimized women and a group of criminals who are inferior to beasts, Li Hongqi decided to fight to the end, bound to eradicate this' yellow tumor '.