Scott Adkins stars as Casey Bowman, a Ninjitsu master who returns home one day to find someone has brutally killed his wife Namiko (Mika Hijii) and their unborn child. Bereft, Casey has only one thing left to live for... revenge. The only clues to Namiko's killer are the barbed wire marks left around her neck. So, with the help of his trusted friend Nakabara (Kane Kosugi), Casey embarks on a mission from Osaka to Bangkok to the jungles of Rangoon, in search of the assassin. Honing his battle skills to a new level, Casey is as discreet as he is deadly, as he becomes a warrior that truly deserves the title Ninja.