The Unsound is an unusual story of a man suffering from multiple organic psychotic disorder, named Dev Oberoi. The condition is so devastating, that it makes the person's behavior erratic and unpredictable and sometimes even violent. Dev goes through all sorts of troubles in his personal life, with wife who is going to divorce him to near ones who are leaving him. Amidst this turmoil, he comes across Simran, a beautiful young girl who is charmed with his flattering ways.
On one hand when his near ones leave him, other people come into his life, completely clueless about what lies around the corner. One such person is his own psychiatrist named Joana. This results in a one night stand between them, despite Joanna being committed to Dev's close friend Kshitij Saxena. Will she be able to expose the demons of Dev's violent past and present and give him a better tomorrow? Also will she be able to save herself from Dev's violent behavior?