Karnan, an orphan, grows up to become a corrupt cop who would do anything for money. He befriends Kaalirajan, the local don, who showers him with a lot of gifts. Karnan's acts frequently upset his sincere subordinate Abdul Kader, who in vain tries to stop him whenever possible. In the meanwhile, a woman constantly visits the police station to inquire about her missing daughter, but Karnan dismisses her in every possible way. He falls for Sindhu, who is kidnapped by Kaalirajan's goons on her birthday but is set free after realizing she wasn't the woman supposed to be kidnapped. Karnan almost dismisses the incident until Sindhu asks him to rescue the actual target, as a birthday present. Having no choice, Karnan engages in a brutal fight that turns out to be not only his first heroic but also a life-changing act. Written by Prashast Singh