ASP Walter IPS, who plays the titular role as a cop, gets the mandatory, yet routine hero introduction scene when a protest turns violent in Kumbakonam. Later, he takes up the case of a couple who seeks his help to find their newborn baby. Walter suspects foul play when he comes across similar cases, and sets out to investigate the crimes, accompanied by his subordinate Paneerselvam. Meanwhile, the ego clash between Eshwaramoorthi, a leading politician in the town, and Bala, who is considered to be his successor, intensifies. Their ego clash brings Balu's friend Arjun, who is linked to the kids who have gone missing, into the picture. How Walter faces several odds in his attempt to nab a criminal syndicate forms the rest of the story.

A young woman with borderline personality disorder, fights a lonely battle when she believes her newborn baby was swapped with someone else’s minutes after her delivery. Her loving husband, who initially doubts, eventually believes and starts investigating with an experienced cop.

A hardworking lorry driver who works at an old paper mart learns about the presence of a bomb and does everything he can to stop it from exploding.

A gangster in Malaysia goes in search of his family after 25 years of imprisonment.

Megan Reed, An ex-cop and a recovering alcoholic who is out of the rehabilitation center. She takes up the graveyard shift and The situation turns upside down when series of bizarre events caused by one of the corpses stored in the morgue.