New Delhi, the winter of 1993. A deaf mute young man is arrested by "Bureau" and accused of being a spy. A sign language expert is brought in to act as an interpreter for the Government’s agent and the “spy”. The unravelling of the mystery is the journey that sucks the sign language expert into the dark vortex of rivalry between intelligence agencies, deceit, and corruption, where the horizon line between innocence and guilt gets hazy.