The plot of the movie mainly revolves around Kalavathi who is a great dancer. During one of her performances, she encounters a bullet attack on stage and helps a police to catch the real attacker. They like each other and marry finally. But then, when she gets old, her voice cracks and she isnt able to sing or dance anymore. While she is in death bed, she reveals a great secret to her husband that one of their daughters were actually not theirs. This stuns her husband and even then, he forgives her as he loved her a lot. The movie ends on a good note. Watch Kalavantin movie online.