"MASTER" is directed by Cho Eui-seok, the director of "Secret Detective". It revolves around the largest fraud case since the founding of South Korea, telling the story of a game of intelligence and courage between the intelligent crime investigation team and the high-IQ fraud gang in investigation and counter-detection. Lee Byung-hun, who recently showed his excellent acting skills in "Insider", will play the villain again. In the film, he plays the role of Chairman Chen of OneNetwork, who leads a perfect crime plan and has excellent eloquence. He is the manipulator behind this large-scale online fraud case. Kang Dong-won plays Kim Jae-myung, the captain of the intelligent crime investigation team who is investigating the case. With his high IQ and impeccable leadership ability, he will face Chairman Chen head-on. It is worth mentioning that this will be the first time that Kang Dong-won has played a police role since his debut. In addition, the new generation popular actor Kim Woo-bin will play Chairman Chen's number one think tank "General Park" in the film. He is a very smart character who can move freely between the police and Chairman Chen.