Mookaiyah (Rajinikanth) is separated from his sister Bhairavi when they were young. Mookaiyah is brought up by a wealthy landlord, Rajalingam (Sudhir). In order to show his gratitude to his employer, Mookaiyah admits to all the crimes committed by Rajalingam. However, Rajalingam makes a fatal error of raping and killing Bhairavi. An infuriated Mookaiyah pledges revenge when he realises that Bhairavi is his long lost sister.