The daughter of a military officer, young Vyjayanthi (Vijayashanti) crosses swords with the Maharani of Visunoor, Vadivakkarasi. The Maharani's vendetta results in her family's getting scattered. Vyjayanthi grows up to become a military officer and impresses none lesser than the union home minister through heroics to capture ultras at the border and secure the release of a kidnapped minister, and (of course, what'd life be without some melodrama!) a five-minute monologue on how the life of a minister is not important compared to the hundreds of lives lost in defending the country. Okay, so Vijayashanti is good at these, but haven't we had enough?

The wowed home minister sends her down South to rid Hyderabad and its surrounding districts of the ISI menace. Identifying Visunoor as the nerve centre of these activities, Vijayashanti sets up camp in Vadivakkarasi's fiefdom. This, of course, results in the inevitable clash. Maharani is well-connected, and the powers-that-be take Vyjayanthi her to task for overstepping her limits.

The disgusted Vyjayanthi resigns her job and becomes a taxi driver helping the needy, but stays on the lookout for the ISI elements as well as her long lost kin. She manages to locate her kin, and just as everything seems to go her way, she is nabbed by the police for engineering a bomb blast. How she comes out and puts an end to her detractors forms the remaining part of the story.