Meenatchi is a widow living with her son Nandu. Jeeva, living in the same colony, has been pining silently for her for the last four years. He runs an organisation called A-to-Z, which can get anything done for anybody.

Jeeva follows Divya to get some information on her for her suitor but she ends up falling for him and pursues him relentlessly. He avoids her, telling her that he is already in love with someone else and when cornered, reveals that it is Meenatchi.

This leads to some surprising revelations about Meenakshi's past. In the flashback, Meenatchi is a music student of Haridas. Haridas has a child, whose mother Banu died giving birth to him. Their mutual respect is mistaken for romance by her father Dharmalingam who is a zamindar and Haridas is killed in the fracas. Later Meena vows to live like a widow, taking care of Haridas' child. However, that very day, Jeeva and his parents were about to see Meenatchi as a prospective bride. When Jeeva sees this scene unfolding before his eyes, he starts admiring her courage. Despite his parent's protests, he assures Meenatchi's father that he would make her change her mind and that he would marry her. But Meenatchi's world turns upside down when Divya's father, a staunch supporter of love marriage, kidnaps Nandu and asks Jeeva to marry Divya. Jeeva of course accepts and things are then resolved in the climax.