Thiru(Narain) is short-tempered, rude and has no hesitation when it comes to beating up someone. These characteristics bring him to the notice of Annaachi('Kaadhal' Dhandapani), who promptly hires him and entrusts all important jobs to him. Charumathi(Bhavana), a woman for whom social service is a part of life, bristles at the very sight of Thiru and two have some unpleasant run-ins. But Thiru falls for Charu and when she realizes that he is ready to change himself for her, she reciprocates his feelings too. But their romance soon runs into some roadblocks.