A homicide squad detective, suspected of serial murder, searches for the real culprit.
During the Joseon Dynasty, the Secret Royal Inspectors are the eyes and ears of the king. They travel the provinces undercover and listen to the plight of the common people, investigating abuses and corruption of government officials.
An ace doctor in a university hospital is wrongfully accused of a medical malpractice incident and gets ousted from the hospital. He then applies to work at a prison, where he plans to make personal connections with all the big shots in prison with the ultimate goal of getting revenge against the hospital that kicked him out.