2009 台北金馬影展 Taipei Golden Horse Film Festival

便衣刑警老郭在六十歲生日前夕接手一件吸毒過量致死的案子，上級主管和同僚虛應故事，老郭卻堅持要查個清楚。明察暗訪的結果，涉案人指向一個在開朗外表之下隱藏著怨恨的女大學生。老郭的固執讓他成為家人與同事眼中的麻煩，一樁他隱藏多年的「罪行」更被檳榔西施小雯揭露。一向認真查案的老郭這次能對自己案子清楚交代嗎？

Days approaching his sixtieth birthday, veteran Detective Kuo receives a new assignment involving the death of a young girl due to drug overdose. Departmental superiors see it as a textbook crime and urge him to conclude the case, but experience and sense tell Kuo otherwise. Kuo's uncompromising principles and refusal to close the case turn him into an outcast, isolated from colleagues and family. And just when Kuo is on the verge of a breakthrough, his own dark past is unveiled…