Scott Adkins (Zero Dark Thirty) returns as Casey Bowman, who is now the sensei of a successful dojo, married to the beautiful Namiko (Mika Hijii), and expecting their first baby. But when Casey returns home one day to find someone has brutally killed Namiko 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), the trail sends Casey from Osaka to Bangkok to the jungles of Rangoon in search of the assassin. Honing his battle skills to a new level, Casey is now the embodiment of the invisible and deadly warrior that is the very definition of the title of Ninja.