Kamal Haasan's role might involve a con artist or someone who tells lies for a living but then faces a situation that forces him to be truthful. The other main character, maybe played by Madhavan, could be the one who is honest but naive. The movie might explore themes of truth, deception, and the consequences of living a lie. The supporting characters could include a love interest, family members, or colleagues who complicate the main character's deception.