Sathyamurthy is an unemployed youth who does not tolerate injustice anywhere. He stays with his father Raja Rathinam Mudaliar, who is the sole breadwinner for his family despite his elderly age, stepmother, and stepsister Sudha. One day, Sathyaa beats up a group of ruffians who are thrashing a tea vendor for not paying extortion money. These ruffians are the henchmen of a local goon Rangan, who works for the local MLA Mariappa. With this incident, Sathya's life changes as he invokes Rangan's wrath. In retribution, Rangan and his men humiliate Sudha in public, forcing Sathya to thrash Rangan and destroy his bar. Meanwhile, Sathya falls in love with Geetha Nair, a Malayali woman who works as a salesperson in a cloth shop.