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".
A father who lost his son realizes his past mistakes and tries to talk to his son and let him rest in peace.