In accordangce with the chief of the police station, Kim, Detective Oh Byeong-ho (starring Ha Myeong-joong) at Moonchang Police Station becomes charge of Yang Dal-su's murder case, who is an owner of brewery. While investigating persons related to Yang's past, detective Oh discovers Hwang Ba-su (starring Choi Bul-am). Oh gets to closer to Kang Man-ho, an ex-commander of a guerrilla unit, and Sohn Ji-hye (starring Jeong Yoon-hee), a bar girl who used to be a concubine of Yang in order to become closer to the truth. Detective Oh discovers a shocking secret while investigating. The victim of the murder case, Han Dong-ju is still alive, though Hwang Ba-wu used to be serving his sentence of the murder. At the end, it is revealed that Yang Dal-su's murder case is the same as that of Attorney Kim Joong-yub. The sustects are narrowed down to Hwang Ba-wu and Tae-young, a son of Sohn Ji-hye. After finishing his sentence, Hwang Ba-wu commits suicide to protect Tae-young who is in mental hospital and Sohn Ji-hye follows his death. Detective Oh fins out all the truth, and then kills himself for burden of this tragedy for twenty years.
