A mysterious call to India's Colombo embassy precedes a suicide bombing in Sriperumbudur. PM Chandrashekhar assigns Kaarthikeyan to lead the investigation, while forensic findings and a leaked photo reveal dark truths.
Special team finds propaganda sites and presses, confirming Haribabu's role. Some suspects evade arrest. They catch Koneshwaran, from a 9-person Jaffna team. Evidence reveals a near-miss second assassination attempt.
Sivarasan evades coast guard while SIT pursues leads. Flashbacks show his LTTE ties and belt bomb creation. After Ravi Shankar's capture reveals plot details, Sivarasan plans to attack SIT HQ as agents find an LTTE press.
Interrogations expose Nalini and Murugan's key roles while SIT hunts them nationwide. Sivarasan attempts bombing SIT HQ against LTTE orders. Intel from Murugan helps investigators close in on LTTE network.
SIT discovers assassination rehearsals by Dhanu, Shubha, and Haribabu. After arresting LTTE supporters who reveal coastal networks, a key suspect escapes, sparking a new manhunt.
SIT searches for Sivarasan beyond Tamil Nadu. A Coimbatore arrest reveals he's in Bangalore. Police nearly catch him in Indiranagar, while a botched operation kills 17 LTTE members, causing backlash.
Police close in on Sivarasan's Bangalore hideout after a local tip. As NSG plans final assault amid delays and media chaos, Sivarasan grows desperate in hiding with companions. SIT awaits clearance to act.
