`Chamku` is the journey of a boy Chandrama Singh alias Chamku whose family had been brutally murdered and was brought up and trained by Naxalites in the Southern interiors of Bihar. He was later picked up under a covert Governmental Program jointly conceived by RAW & IB. Chamku was trained to kill. His life changes when love enters his life and makes him see certain aspects of life which he had turned a blind eye to. However, his past comes back to haunt him.