Yang Rui falls in love for the cleaning woman who works in a taekwando gym, only to later discover she's an undercover cop named An Xin. An is in hiding from drug smugglers who have a score to settle with her - a raid she led resulted in the death of one of the smuggler's parents. To complicate matters further, An was previously romantically involved with the smuggler whose parents were killed.
謝霆鋒
as Mao Jie
趙薇
as An Xin / He Yan Hong
Liu Yunlong
as Yang Rui
陈建斌
as Zhang Tie Jun
孙海英
as Captain Pan
Hong Jiantao
as Liu Ming Hao
So Ga-Tung
as Xiao Xiong
Dung Yeung-Yeung
as Xiao Xiong (baby)
Lau Kwong-Hau
as Lao Qian
Leun Chu
as Xiao Kang
牛莉
as Zhong Ning
