Three Walls is a saga of three prisoners: Jaggu, a lawyer, who seeks solace in the verses of his poetry; Nagya, a man aggreived with the world; and Ishan, a natural charmer, for whom life means freedom. The three develop a special friendship in prison and become friends for the uncertain span of time that fate holds for them. Mohan is the prison warden who strongly believes in holistic reform and regards the prison as home to prisoners and not as a cage for animals. Chandrika is a documentary filmmaker, wanting to make a film on the three convicts. A bond begins to grow between Chandrika and the three men. And with it unfolds an inexplicable series of events that leads to a nail-biting finale. The film is a bittersweet saga about friendship, hope and survival in a world within a world.