Many policemen in Xiguan police station died in the "7 14 shooting", and only Qin Chi survived. Qin Chi, who survived the robbery, often had nightmares, dreaming that he and his colleagues had a gun battle with gangsters. Qin Chi was promoted to deputy division commander, and the Railway Bureau awarded him a title. Teacher Hu Yibiao is absent. Qin Chi went to Zhao Xincheng, the harbor detachment, to learn about the scene on the day of the gunfight. Sudden murders in urban areas involved more than one family, and only Zheng Xin, who was studying at school, escaped. Qin Chi investigated the murder and found a girl, Chen Rui, trying to hurt him with a knife. When Qin Chi asked Zheng Xin, he showed a little nervousness and hostility, which aroused Qin Chi's suspicion.

2. The second episode

The task force sorted out the case of "7 14 gun case". Qin Chi, the only survivor, lost his memory. Xia Yuxi analyzed the causes of Qin Chi's amnesia, and the forensic doctor found some doubts. The dead policeman and six suspects were shot by the same 9mm pistol. Qin Chi went to see his counselor Yu Xia's students and asked for information about Wu Xiaoyun. Chen Rui followed Qin Chi again, and Qin Chi simply invited her to get on the bus. Chen Rui is hostile. Qin Chi took Zheng Xin and his teacher to the police station for questioning. Under the guidance of Qin Chi, the teacher admitted that he knew that Zheng Xin might have killed his family. Qin Chi met Chen Rui again, and Chen Rui finally reached out to Qin Chi.

3. The third episode

Qin Chi was stabbed and asked Yu Xia to take care of the wound. Students in Yu Xia reminded him not to indulge Chen Rui any more. Qin Chi received a mysterious phone call when he got home, saying that the "7 14 gun case" was designed by Qin Chi. Lu Mingjia got an insurance policy from the Zheng family, and the ultimate beneficiary was. Qin Chi and Lu Mingjia came to the warehouse where the "7 14 gun case" happened. Qin Chi suddenly felt dizzy, and the memory in his mind flickered. Chen Rui's sudden appearance exposed her identity. It turns out that she is Chen's sister. Qin Chi personally inspected Wu Xiaoyun's body, found new doubts, and finally uncovered the truth that a family of four was killed.

4. The fourth episode

An old lady came to the police station to report that her son Fan Kai was missing and asked to see Qin Chi by name. Qiu Dongyang went to the warehouse of "7 14 Gun Case" and said that Hu Yibiao had come to investigate Qin Chi and asked him for help. Qin Chi and Lu Mingjia came to Fan Kai for a rental inspection and found that Fan Kai lived with a girl and took drugs for a long time. In order to investigate Qin Chi, Qiu Dongyang specially invited Guan Hongfeng to help. Qin Chi and Lou Yi talked about the investigation, but Lou Yi didn't seem to know that Fan Kai was taking drugs. Qin Chi received the mysterious phone call again, asking him to get something from the warehouse of "7 14 Gun Case".

5. Episode 5

Feng Xiao told Qin Chi that the two shots he shot took place after the shooting, so he was investigated by the supervision team. With the help of the management team, Qiu Dongyang and Feng Xiao met a man named Yao Ji and learned that Cheng Laosi had brought seven or eight people to ask him to help them find a place to live. Lu Mingjia's investigation found that Fan Kai was not only a drug addict, but also suspected of drug trafficking, and had close ties with a drug dealer named Lin Zhong. Qin Chi asked Lin Zhong, but was secretly stopped by LouYi. Qin Chi lived at home with Chen Rui and was caught by Feng Xiao. The mysterious phone call came again, threatening Qin Chi to go to Gao Ji in the warehouse to get a gun.

6. Episode 6 Preview the plot

The path found the rental house with Zhong Zai. When Qin Chi arrived, the wall was covered with blood, and no suspects or victims were seen. Qin Chi knew Lou Yi was hiding something, so she told her everything she knew. Qiu Dongyang suspected that the "7 14 Gun Case" was designed by Qin Chi, but Feng Xiao did not quite agree with this statement. Divers salvaged a female body from the river, and the Hu team thought it was a major suspect and ordered him to be wanted. Qin Chi asked to listen to the telephone recording, thinking that this mysterious person might be related to Chen, and wanted to see if she knew him. I took Qin Chi's dog to find it, and learned that Chen came back to ask for the bill.

7. Episode 7

After investigation, it was found that all three girls involved in Fan Kai were dead. Lou Yi was finally moved and told everything he knew. Qin Chi found Fan Kai, they fought, and Fan Kai escaped. LouYi catch up and follow Fan Kai with Qin Chi. Fan Kai put a knife rest around his mother's neck, threatening Qin Chi and others. LouYiMeng a bow, the knife cut to his neck. Blood gushed out immediately, and everyone was shocked. Qin Chi returned home and talked to the mystery man again. Chen Rui's teacher called Qin Chi to school. It turned out that Chen Rui gave his phone number to the teacher and said he was a parent.

8. The eighth episode

The police found a car accident and a sanitation worker was killed. Qin Chi went to the scene to investigate and found that the car was not far away, and the body of the owner Liao Yong was in the trunk. Qin Chi and Xiao Lu went to Wan Qiang, a loan shark, and Liao Yong received his dunning information before he died. Chen Rui went to pengpeng and took out the recorder Qin Chi gave him to listen to, but pengpeng said it was the police. With the help of Feng Xiao, Qin Chi saw the gun found in the warehouse of "7 14 Gun Case". Seeing the gun, Qin Chi seemed to think of something. Path found Liao Yong contact with three women before he died, so he went to investigate.

9. Episode 9

The three women contacted by Liao Yong before her death were members of an organization, and Liao Yong was their former agent. Upon inquiry, Qin Chi and Xiao Lu learned that Liao Yong had blackmailed them before he died. Path analysis of the cause of death of sanitation workers, infer the first scene of Liao Yong's death. At the same time and at the same distance, three pairs of suspects were found in the alley. If there is no accident, the murderer is among them. Qin Chi continued to pursue the case and was suddenly influenced by Hu Yibiao. The mystery man called again, threatening Qin Chi to give him the gun. Qin Chi drove the car and went to the scheduled place according to the instructions of the mysterious man.

10, episode 10

Lu Xiao found a new doubt, came over and asked Xiaowen, and asked her to sign. Qin Chi put the items in the designated place according to the suspect's request, but Chen Rui seems to be involved. Xiao Lu took Shi Jing and his wife to the scene of the accident, suspecting that Zhou Yan might not have died by accident. In order to investigate the truth of the "7 14 gun case", Qiu Dongyang went to the casino alone to meet Cheng Laosi and claimed to be Chen's friend. There was a gun battle in Cheng Laosi's casino, and Qin Chi met Qiu Dongyang by chance. Qin Chi chased out of the casino, had a fierce struggle with the suspect, and fell into a coma after being punched.