In 1991, the 18-year-old triad member Liu Jianming followed the instructions of his elder brother Han Chento enter the police academy and became a police undercover agent. At the same time, another student at the police school, Chen Yongrenplayed by, was forced to drop out of school by the police on the surface, but in fact he was allowed to enter the triad as an undercover agent. After graduating from the police academy, Liu Jianming successfully entered the police station and got promoted step by step. He has become a member of Team A of the Criminal Intelligence Division. During this period, he used various opportunities to provide Han Chen with a lot of intelligence. And Chen Yongren has gained Han Chen’s initial trust over the years, but since Han Chen’s case has never been solved, he can only stay in the gang forever, and only Police Superintendent Huangplayedhas a single-line contact with him.
One night in 2002, according to Chen Yongren’s undercover intelligence, it was learned that a batch of drugs was about to be traded. The party involved in the transaction was Han Chen. However, at that time, Liu Jianming promptly passed the news to Han Chen so that he could escape successfully. However, both sides discovered their own internal affairs. There are "inner ghosts", so a fierce battle begins. In the final ending, the "inner ghosts" of both parties recognized their identities, but Liu Jianming took the lead and deleted Chen Yongren's files at the police station, but before deleting them, they kept a backup. The password was his girlfriend Mary's. Birthday. After thinking deeply, Liu Jianming decided to be a good person and asked Chen Yongren to give him a chance. Chen Yongren didn't believe him, so he copied Liu Jianming. In the end, Chen Yongren was killed by another police undercover from Han Chen, and Liu Jianming also killed the undercover who opened the gun.
