The film opens with a young man purchasing a new car, inspired by a Pannaiyar (Pannaiyar) from his village and his love for vintage vehicles. The story is set in a picturesque rural setting, where the Pannaiyar and his wife Chellamma (Chellamma) are known for their kindness and progressive mindset. They are respected figures who have played a crucial role in introducing modern technologies like TV, radio, and telephones to their community, allowing villagers to use these facilities freely with their permission.
The Pannaiyar and Chellamma have a married daughter named Suja (Suja), who is portrayed as greedy and somewhat spoiled. Whenever she visits, she takes the opportunity to snag items that catch her eye, showing her materialistic tendencies. One day, Shanmugam (Shanmugam), a family friend, visits with his brand new Fiat Premier Padmini car. Pannaiyar is instantly captivated by the car’s modern features, which symbolize progress and new possibilities. To everyone's delight, Shanmugam entrusts the car to Pannaiyar during his absence, promising to leave it under his care while he visits his pregnant daughter.
Pannaiyar becomes deeply attached to the vehicle, treating it like a treasured possession, despite not knowing how to drive. He appoints young Murugesan (Murugesan) as the driver and Peedai (Peedai), a household servant, as the cleaner. Both are treated like family members, and soon, the villagers also begin to use the car in emergencies. During a funeral, Murugesan encounters a beautiful girl named Malarvizhi (Malarvizhi), and they quickly fall for each other, sparking a sweet romantic connection.
As the story progresses, Chellamma requests her husband to learn driving for their wedding anniversary so they can visit the temple together. Pannaiyar eagerly agrees and asks Murugesan to teach him. However, Murugesan hesitates out of concern that Pannaiyar might jeopardize his job if he learns to drive, leading to slow progress. Meanwhile, tragedy strikes when Shanmugam’s daughter visits with the news of his sudden death. Deeply affected, Pannaiyar returns the car's keys and documents that Shanmugam had left. She leaves the car behind as a heartfelt remembrance of her father, and the family is proud to now own it.
Inspired by heartwarming incidents, Murugesan finally commits to teaching Pannaiyar to drive. However, during one lesson, Pannaiyar causes a minor accident, which results in some damages to the car and subsequent technical issues. Meanwhile, Suja notices the new car and demands it, forcing Pannaiyar to reluctantly give it up, much to the disappointment of Murugesan and Chellamma. On their wedding anniversary, the family prepares to leave in a traditional bullock cart, only to be surprised by Suja, who arrives with the car after claiming it had broken down and she and her husband had an accident.
Suja insults her father, calling the car useless, and leaves it behind in her anger. Chellamma steps up to scold her, and she storms off, leaving the car intact. When they try to start it, it refuses to turn on, causing frustration. Peedai, in a humorous act, jumps on the bonnet—upon which the car suddenly roars to life, finally functioning. Celebrating their perseverance, Pannaiyar successfully drives the car with Chellamma to the temple, marking a moment of achievement and joy. They also have a fun race with a bullying bus driver, adding a lighthearted touch.
Meanwhile, the young boy who had dreamt of a front seat ride, having saved diligently, departs for higher studies, leaving his wish unfulfilled. Years later, that same boy has grown into a young man who now owns the car from his childhood. Visiting his hometown, he searches for the Pannaiyar’s house, and Murugesan recognizes him. When asked if he needs a ride, the young man agrees, and finally, his childhood wish is granted as he sits in the front seat of the beloved vehicle. They drive away together, symbolizing the fulfillment of dreams and the enduring bond with the treasured car.
