Mirasu (Senthilnathan) killed his elder brother Selvanayagam (Nizhalgal Ravi) and Selvanayagam's wife (C. R. Saraswathi), he tried to kill his mistress Lakshmi (Kavitha) for the inheritance. The innoncent Lakshmi was then sent in jail for Selvanayagam's murder and gave birth in jail, with the help o...