A career-long undercover Hong Kong cop is sent to Mainland China when his former protégé becomes the primary suspect in a murder.
甄子丹
as Dragon Chan
景甜
as Fang Jing
安志傑
as Sunny
鄭中基
as Captain Zhang
鮑起靜
as Amy (Long's Mother)
鄒兆龍
as Cheung Mo-Hung
杨志刚
as Lei Peng
尹子維
as Terry
吳志雄
as Triad Mahjong Player
Zhang Hanyu
as Blade
Ken Lo
as Brother Bo (Triad Mahjong Player)
麥長青
as Brother Kun
