A serial killer strikes back in London after laying low for three years. Amar, the investigating detective has since resigned from the job but is brought back to crack the case. Amar decides to return and resolve the case once and for all.

From the shadows of a London kitchen, a humble Sikh porter discovers he is heir to a legendary warrior order. As darkness threatens humanity, he must rise as the Ninth Master to f ight for the fate of the world.