Jagannathan (Sarath Kumar), fondly known as Jaggubhai, is a tough, upright, straightforward Indian police officer with sharp methods. His way of dealing with the criminals strikes terror in the underground world. Jaggubhai is sent to Australia on an important mission to deal with antisocial elements there. In Australia, he meets Ilavarasi (Srisha), and they fall in love with each other. Jaggubhai fails in his mission for which he came to Australia, and the brief romance with Ilavarasi ends abruptly. Jaggubhai returns to India as a dejected officer, failing in his official duty and personal life. Fate had something in store for him. 20 years later, or as he says it 21 years later, he gets a call from Australia stating Ilavarasi is dead and has left him a will. He reaches Australia and is shocked to know the brief encounter with Ilavarasi had resulted in a daughter Monisha (Shriya Saran), now a teenager.