Sivakumar Kalyanasundaram (Vishal (actor)), a meek person who owns a mobile sales and service center in Madurai, falls for a schoolteacher named Malarvizhi Chidambaram (Lakshmi Menon (actress)). His father Kalyanasundaram (Bharathiraja), a retired government employee, shows much care on Siva's elder brother Nagaraj (Guru Somasundaram), an honest government officer. Meanwhile, there is a big mafia gang led by Simmakkal Ravi (Sharath Lohitashwa), who rules Madurai with an iron fist. Sethu (Vikranth), a friend of Siva, helps him woo Malar. Sethu helps his ex-lover Amudha (Krithi Shetty) escape from Ravi's chief henchman Bharani (Harish Uthaman). Nagaraj unfortunately gets into Ravi's bad books and gets killed by him. Sethu is also killed by Ravi, infuriating Siva. Siva and Kalyanasundaram draw up separate plans to eliminate Ravi. Kalyanasundaram hires a hit-squad to do his bidding, while Siva monitors Ravi's activities closely, biding his time for the right moment. The hit squad makes a failed attempt at Ravi, and he tracks the source down to Kalyanasundram. Just as Kalyanasundaram is about to be 'found out' in a trap set by Ravi, Siva interferes and manages to secure Kalyanasundaram. Siva continues to be on Ravi's heels, but he too gets exposed, and the story culminates with Siva mustering up all his courage strength out of his survival instinct. Siva kills Ravi and his associates and manages to retrieve the cash that Kalyanasundaram had paid to the hit-squad.