The SIT learns how Dhanu, Shubha, and Haribabu conducted dry runs to prove they could breach high-level security-setting the stage for Rajiv Gandhi's murder. Meanwhile, the SIT arrests key LTTE sympathizers who expose the elaborate smuggling and safehouse networks along the Tamil Nadu coast. However, when one of them, who is the key to finding the mastermind, escapes custody, it reignites a desperate chase.