Neengal Kettavai (1984)

Poornima Jayaram, a widow living in Ooty leads a peaceful life with her two sons. Jaishankar, a tourist who visits the place gets tempted and rapes her. In the act, Pornima dies leaving her two sons who witness the murder. The eldest son (Bhanu Chander) is raised by his maternal uncle while the younger brother (Thiagarajan) joins a blind music teacher as he has great interest in music. Years later he becomes a great singer. Meanwhile, his brother is trained effectively by his uncle learning martial arts with the intention of avenging the death of his mother as he very well remembers the culprit's face. With a turn of events leading to both sons joining together and take revenge for their mother's death forms the rest of the story.