After listening to Wang Dayong's friend Liuzi, Cheng Bing followed Liuzi's directions to the community where the Wang brothers rented a house, but found nothing.Cheng Bing guessed that Wang Dayong did not trust Liu Zi, and then received news that someone had been killed in Ping An Community. He found that the crime scene was opposite the house where the Wang brothers rented, and went there immediately.

The day before, the Wang brothers discovered Cheng Bing and others in the rental house, so they hid in the next door room and saw the victim Zhao Maimai in the house. Wang Eryong sexually assaulted Zhao Maimai and then killed him.The next day, Zhao Maimai's father came back from the night shift and saw his daughter's body before calling the police.

Cheng Bing and others were reprimanded by the Zhou Bureau for this matter. Worried that the Wang brothers would harm others again, the Zhou Bureau decided to issue a wanted order to deter the two men.

On the other side, Wang Dayong learned what Wang Eryong had done and reprimanded him. Wang Eryong no longer cared about life and death because he had killed many people. Wang Dayong did not let Wang Eryong do the killing, thinking that even if Wang Eryong was caught, he would not necessarily be sentenced to death. Then Wang Dayong letWang Eryong completed the task according to his plan.

Cheng Bing and others got the information and knew the location of the Wang brothers. When they rushed there, they had disappeared. They later determined the location through the map they left behind after studying it.

On the street, Cheng Bing and others chased the Wang brothers who were robbing them on the street. Wang Dayong and Wang Eryong escaped separately. Cheng Bing watched helplessly as Wang Dayong escaped due to the inability to drive into the alley and the car accident.

Wang Dayong escaped and Wang Eryong was arrested. After receiving the news, Cheng Bing immediately returned and took away Wang Eryong, who was surrounded by the crowd.

After returning to the police station, Cheng Bing learned that Uncle Qi was going home to get medicine, and took the initiative to stop the interrogation of Wang Eryong.

During the interrogation, Cheng Bing saw that Wang Eryong had an arrogant attitude and was unwilling to cooperate. When he was about to take action, Lin Ying stopped him due to interrogation discipline.

After dinner, Wang Eryong faced the interrogation and told how he found a gun during a theft in Jiangzhou and later killed him because he was disturbed by the woman of that family.

Lin Ying and Lao Ma left to buy food, and met Pan Dahai who had returned after discovering Wang Dayong's whereabouts.

The interrogation continued. Cheng Bing heard Wang Eryong say he had a headache and didn't care. Then he learned from Wang Eryong how Wang Eryong sexually assaulted Zhao Xiaomai and killed him. Because he couldn't stand Wang Eryong's arrogance, Cheng Bing punched him.At this time, Pan Dahai passed by and saw Wang Eryong starting to twitch.