Bad and Crazy

The story is about a corrupt yet practical detective who has Dissociative Identity Disorder and who harbours a sense of justice. Su-yeol (Lee Dong-wook) works as a police officer. He is competent at his job, but he also has questionable ethics. He will do anything to achieve success. Due to his ambitious personality, he has received promotions in a short period of time. His smooth life suddenly changes with the appearance of K (Wi Ha-joon), who is a righteous person. Meanwhile, Lee Hui-gyeom (Han Ji-eun) works as a police lieutenant on the drug squad at the Mooui Police Department.