After his young son goes missing, Lei (Andy Lau) begins a 14-year quest to find him.
劉德華
as Lei Zekuan
井柏然
as Zeng Shuai
倪景阳
as Su Qin
梁家輝
as Policeman
吳君如
as Female Trafficker
孙海英
as Zeng's Own Father
許娣
as Zeng's Own Mother
劉雅瑟
as Xiao Ju
Zhao Wenhao
as Shi Anyi