Lin Bing, a prosecutor at the Binhai City Procuratorate, has always been known for her impartiality. However, colleagues who are familiar with her style know that she is completely ruthless to corrupt elements who are public servants. On this day, she received a real-name report from the masses that Qi Yannan, the captain of the first team of the Municipal Public Security Bureau's Anti-drug Detachment, embezzled and accepted bribes and released criminals privately. She suppressed her anger and went straight to the Municipal Bureau to investigate. Qi Yannan's shooting skills are very accurate, and his success rate in solving cases is also very high. He is a backbone and top in the eyes of the leaders. Unexpectedly, when he was fighting a criminal gang that smuggled and sold drugs, although he relied on his skills and boldly went undercover to enter the tiger's den, he suddenly changed when he started a life-and-death battle with the criminal leader "Little Cao Cao"... Even more unexpectedly, the death of the suspect "Hei San" without evidence led to the suspicion of prosecutor Lin Bing towards him. For a while, Director Ma of the Municipal Bureau and Captain Dai Wenxing of the Anti-drug Brigade were deeply uneasy... It turned out that Qi Yanan had noticed the whereabouts of an international drug smuggling criminal, codenamed Lao K, a long time ago. But Lao K's actions were cunning and covert, and he could not be cracked for a long time. Finally, Qi Yanan found that a criminal suspect knew Lao K's details, but he was killed before the suspect was arrested. Later, in the operation of arresting Xiao Cao Cao, Qi Yanan suspected that Lao K was Ke Shilan, a famous local businessman, through various clues, but he could not find evidence. Instead, Ke Shilan accused him of false accusations in front of leaders at all levels and the media, causing a lot of trouble. The Municipal Bureau was very passive for a while. The two wondered, could it be that Qi Yanan was still entangled in the shadow caused by Ke Shilan? When the situation was tense, Director Ma told Qi Yanan earnestly that a truly faithful public security officer must have resilience, stress resistance and patience at the same time. Qi Yanan proudly stated that he would not do anything to let down the organization, let alone the police profession. He and his team fought for responsibility, ideals and sunshine! As Lin Bing pursued Qi Yannan relentlessly, with the evidence and experience in hand, Lin Bing realized that the truth she gradually uncovered might have accidentally touched a huge community of corrupt interests! And she herself is also very likely to fall into the quagmire... One wave has not settled, another wave has risen. In order to obtain the priceless ancient Chinese medicine secret recipe "Vedanta Powder", various forces have stretched out their black hands, and Su Jinrong, the president of a large financial securities company, is one of them. Su Jinrong, with elegant manners and extraordinary conversation, is one of the first elites in my country to leave the system and go into business. She is familiar with policies and regulations and has a wide network of people in Binhai City. But what is not known is that she was originally a financing channel for Ke Shilan, the mastermind of the drug trafficking gang, and also one of the partners of interest. Of course, she did not want to see Ke Shilan get into trouble, and she repeatedly used secret relationships to help Ke Shilan get out. However, Ke Shilan did have problems in the end. While dealing with Lin Bing, who was also investigating him, Qi Yannan found Liu Taozhu, one of Ke Shilan's men and Ke Shilan's secret agent for drug dealing. Qi Yannan was also surprised to find that Liu Taozhu's piano store had a business consultant, a piano teacher at the Conservatory of Music named Lin Ru, who had a close relationship with Liu Taozhu and Ke Shilan, and she was actually the sister of prosecutor Lin Bing! For a time, the layers of fog made it difficult to find the true work. What surprised everyone even more was that the drug control department of other provinces sent a letter saying that they had obtained important intelligence that the drug dealer "Sister Hua" active in other provinces often used pianos to smuggle drugs. They hoped that the team would help find clues about "Sister Hua" in the investigation of Liu Taozhu's drug trafficking case so as to catch them all in one fell swoop. No one expected that when the Provincial Narcotics Control Office and a team were on high alert and ready to take action at any time, the key figure Liu Taozhu disappeared! Liu Taozhu's sudden escape disrupted all deployments and made Qi Yannan very angry! Because Liu Taozhu's disappearance broke all the clues, the clues of drug trafficking, the relationship between drug trafficking and Ke Shilan, and the drug trafficking relationship with Sister Hua, how could Qi Yannan not get angry? How could he explain to Director Ma and Dai Wenxing? How to explain to the Provincial Narcotics Control Office? The angry Qi Yannan investigated all the relevant personnel, including Lin Bing's sister Lin Ru. Lin Bing learned that his sister Lin Ru was actually investigated, and thought it was Qi Yannan's revenge for his investigation of him, and Lin Bing clashed with Qi Yannan. But Qi Yannan told Lin Bing that he was not taking revenge, but was worthy of the power of justice and light. These forces come from the sacrificed anti-drug police officers, from the conscience of the society and the efforts of all team members, and from the support of all social justice forces and the will of the people. In fact, I was able to survive by relying on, or even stepping on the shoulders of these forces! In order not to disappoint these forces, not to let the darkness regenerate, and not to leave regrets for the investigators and those involved, Qi Yanan told the truth, hoping that Lin Bing would resolve the misunderstanding, and work together with wisdom and courage to solve the case. Lin Bing also righteously warned Qi Yanan that the profound lesson she had learned on the anti-corruption front was that no criminal could grow big without the protection of corrupt elements who hold real power! Therefore, her investigation into corruption and bribery was the real root-out operation. While Qi Yanan was deeply shocked by Lin Bing, her long-suspected worries flashed in her heart... At the same time, with the joint efforts of a team of colleagues, they finally deciphered the contact code between Liu Taozhu and drug dealers from other provinces. This was a great opportunity for the team to capture Ke Shilan! However, Ke Shilan escaped, leaving a tail for the case. Qi Yanan's inner doubts were finally confirmed by Lin Bing, and there was indeed a problem within the Public Security Bureau. In the end, with the encouragement and support of everyone, Qi Yanan and Lin Bing, although Ke Shilan's main problems had been basically clarified and both the Public Security Bureau and the Procuratorate could report to their superiors, put aside their past grudges and worked together to overcome all the difficulties and pressures without fear of sacrifice. They pursued the criminals relentlessly and brought to justice all the hidden, well-connected, and fugitive criminals.