The old-timer Bae Tae Sik butt heads with Han Jin Woo acting as the genius medical examiner. The two always differ in opinion, but whenever a case needs to be solved they respect each other’s strengths and act as an unbeatable duo.

Han Jin Woo, Korea's top medical examiner, leads a team of experts in conducting a medical crime investigation after strange events and mysterious deaths occur in a hospital. He first clashes with but is later aided by Kang Kyung Hee, an attractive female detective who possesses excellent skill in martial arts and a strong sense of justice.