ASP Walter IPS, who performs the titular function as a cop, will get the obligatory, but routine hero introduction scene when a protest turns violent in Kumbakonam. Later, he takes up the case of a pair who seeks his assist to search out their new child child. Walter suspects foul play when he comes throughout comparable circumstances, and units out to analyze the crimes, accompanied by his subordinate Paneerselvam. In the meantime, the ego conflict between Eshwaramoorthi, a number one politician within the city, and Bala, who is taken into account to be his successor, intensifies. Their ego conflict brings Balu's buddy Arjun, who's linked to the youngsters who've gone lacking, into the image. How Walter faces a number of odds in his try to nab a legal syndicate kinds the remainder of the story.