Following a tip from a small-time lodge owner (Sadique), the Anti Terrorist Squad (India) conducts a search at the rooms where a group of suspicious youths stayed. Baba Kalyani IPS (Mohanlal), the head of ATS M3 division finds certain vital clues, which he wants to follow up on. With permission from Bose Ninan (Venu Nagavally), the IG of police, Baba Kalyani arrives in Kochi. He is posted in the Law & Order department undercover with Godwin Joseph (Biju Menon) and a couple of ATS officers assisting him. All his men are newly inducted IPS officers.