Li Hongqi, a righteous Northeast police officer, accidentally discovers the existence of local bullies involved in pornography. As the investigation deepens, a gang of local tyrants who control and oppress women with drugs emerges and openly provokes the police. Li Hongqi has decided to fight to the end, and is bound to eradicate this "pornography tumor".

Criminal police Li Hongqi accompanied his girlfriend back to his hometown for the Chinese New Year, and accidentally discovered that his father-in-law was involved in this crime-related case. With a strong sense of justice, Li Hongqi decided to give up his vacation and cooperated with the local police to start an investigation.