Muthuvelu (Murali) lives with his mother Deivanai (Kokila) and grandfather (A. K. Veerasamy) in a mountainous area. Despite being an educated man, he makes his living harvesting honey using traditional methods. The wicked forest officer Sundaram (Charan Raj) often gets into fights with Muthuvelu. One day, the city girl Kaveri (Saradha Preetha) spots Muthuvelu singing a song. She records it with her video camera and then sends the video to a TV channel. Muthuvelu's song is telecasted by the TV channel, and he becomes popular in no time; thus, he becomes a singer. Once again, Muthuvelu and Sundaram get into a fight. This time, Sundaram is suspended from his job by his superiors.

Thereafter, Muthuvelu and Kaveri fall in love with each other. At first, Kaveri's father Ramasamy (Shanmugasundaram) accepts for their marriage. Sundaram enters their home pretending to be Muthuvelu's father. Deivanai claims that he is not her husband when Ramasamy asks about her husband's identity and she refuses to tell. Ramasamy puts his foot down when she refuses to reveal any pieces of information about Muthuvelu's father. Ramasamy is now grateful to Sundaram and appoints him to work in his factory.

Later that night, Deivanai reveals to Muthuvelu that she was an orphan and lived alone in the past. She had a secret affair with the wealthy man Ratnasabapathy (Vijayakumar), who promised to marry her. Thereafter, Deivanai received death threats from Ratnasabapathy's relatives and had no other choice but to leave the village. A kindhearted person, now Muthuvelu's grandfather, helped Deivanai and took care of her like his own daughter.

Muthuvelu goes in search of his father Ratnasabapathy and finds that he is now married and has three sons. What transpires later forms the crux of the story.