Jin Kang Ho is an enthusiastic and effective detective. He tries to catch criminals by any means necessary. He also doesn't get along with other detectives. Kang Moo Young is an enthusiastic PD of a TV investigative program. The program tries to catch criminals that the police could not. Kang Moo Young is upright, but she will take risks to reveal the truth. Jin Kang Ho and Kang Moo Young unexpectedly meet and they begin to cooperate on unsolved cases.