Idaya Kovil is a tragic love story. Its about Mohan, a famous singer who becomes an alcoholic after the love of his life, gauri dies. After a few years he meets another girl named Suriya, who tries to help him become sober, and eventually falls in love with him. He denies her proposal and is arranged to marry someone else so she commits suicide. The movie ends with Mohan looking down on Gauri and Suriya's graves.