When a Japanese Yakuza boss is brutally executed, his family offers one million dollars for a hit on the assassin who pulled the trigger. But when a lone hitman (Jet Li) hears of the reward, he teams up with an "agent" willing to show him the underworld of Japanese corruption in order to cash in on a murder. Now, the best hit man money can buy is about to uncover the person no one would have expected. Enter a world where watching your back becomes the only means of survival.