It's all about playing with guns in this cops-and-robbers thriller with a twist. Louis Koo plays Ken, a champion shooter while Daniel Wu is Jerry, the police sharpshooter.

When Ken foils an armed robbery and becomes a public hero despite killing a cop, Jerry can't shake the feeling that his new friend may not be all he seems.

Who's the villain and who's the hero? It would be hard to tell until the final shoot-out.