In 1782, in order to oppose the power of Lao Lun, the King of North Korea investigated corruption in various places. During this period, he appointed Choi Seokun (played by Kim Myung-min) as the detective. He was an outstanding detective in the history of North Korea. A housekeeper was killed for exposing corruption. Cui Xianggen cleverly uncovered the real culprit who suffered from color blindness. However, the murderer soon...