"Monster", the foreign language is called Beyond Evil. Co-stars will premiere in South Korea on February 19, 2021. The film tells the story of two men who solve a murder case in a row. Shin Ha Kyun plays policeman Lee Dong Sik and Yeo Jin Goo plays policeman Han Joo Won. Li Dongzhi is a policeman from Wanyang Police Station. He has a surly personality and a bit paranoid. Friends and colleagues think he is like a lunatic. 20 years ago, police officer Li Dongzhi's sister disappeared, and Li Dongzhi became a suspect and was taken away for investigation. When he was about to be promoted, his colleague died strangely again. So he became a handyman. Suddenly, an elite policeman named Han Zhouyuan came to the police station, and he became his boss as soon as he arrived. Han Joo Won is very handsome. But the character is the same as Li Dongzhi, especially paranoid. The bureau arranged for Han Zhouyuan to investigate a serial murder case. He suspected that Li Dongzhi was the murderer. During the investigation, the two of them became good friends who fought side by side