Oru Naal Iravil is mostly a faithful remake of the Malayalam film Shutter. The protagonist, Sekar (Sathyaraj) is someone who has made it in life all by himself, toiling hard in Singapore. But he is also unfairly prejudiced and chauvinistic. He suspects his teenaged daughter of having an affair just because he sees her talking with her friends and fixes a rushed alliance, turning a deaf ear to the protest of his wife. A drunken night with his friends lead to a moment when, out of temptation, he solicits a call girl (Anumol) he comes across on the road. He is helped by Soori (Varun), an auto d...