《不当交易》是由柳承莞执导的韩国犯罪电影。影片讲述了身为警察和检察官的公务人员，却中饱私囊不惜沦为杀人幕后推手的犯罪故事。最近发生了一起性质恶劣的连环杀人案，但是却一直无法破案，导致国民热议不断，最后引起了总统的关注。然而，调查过程中嫌疑人却离奇死亡，导致案件调查无法继续进行，为了在限定期限内向国民和上级有所交代，警察局决定瞒天过海，用假犯人来顶罪结案。崔哲吉是负责这起案子的警察，他在警局里因为没有人脉关系所以很多年都没有升职，上司承诺如果他办好了这件事，就会得到升迁。崔哲吉当然不放过这个机会，他指使自己的线人安排了一个假犯人，完成了这次任务，警局得以向国人有了交代。升职的崔哲吉新官上任，以贿赂罪拘留了地产大亨金会长。检察官朱阳与金会长一直有利益输送，因此反手展开对崔哲吉的调查，得知崔哲吉升迁的内幕后，朱阳又向崔哲吉提出了新的交换条件

"Improper Deal" is a Korean crime movie directed by Ryu Seung-wan. The film tells the crime story of a public servant who is a policeman and a prosecutor, but is rich in private pockets and does not hesitate to become the driving force behind the murder. Recently, a serial murder case of a bad nature occurred, but it has been unable to solve the case, which has caused heated discussions among the people, and finally attracted the attention of the president. However, the suspect died strangely during the investigation, which made the case investigation impossible. In order to explain to the citizens and superiors within the time limit, the police station decided to hide the truth and close the case with fake criminals. Cui Zheji is the policeman in charge of this case. He has not been promoted for many years in the police station because he has no connections. His boss promised that if he does this well, he will be promoted. Of course, Cui Zheji didn't miss this opportunity. He ordered his informant to arrange a fake prisoner. After completing the task, the police department was able to explain to the Chinese people. The newly promoted Cui Zheji took office and detained the real estate tycoon Chairman Kim for bribery. Prosecutor Zhu Yang and Chairman Kim have always had interests in transfer, so they turned their backs to investigate Cui Zheji. After learning the inside story of Cui Zheji's promotion, Zhu Yang proposed a new exchange condition to Cui Zheji