Indian Air Force pilot Flight Lieutenant Ashok is in love with Sivagami. They had a secret wedding and Sivagami becomes pregnant.Lt. Ashok dies in a plane crash. Sivagami tells her father about her pregnancy. But soon he dies too. Sivagami is now alone with her newborn child.Out of fear from people tagging him an illegitimate child she puts him in the doors of an orphanage,with the idea of adopting the same child next day.Before she adopted him a rich man whose wife have already lost many children had lost one again so he came to the orphanage to adopt that child.After knowing this sivagami goes to the rich man's house and tells him about her past.He asks her to work as a servant.He emphasises that this must not be told to his wife, who is fond of the child. She promises him that she would not. Meanwhile, the wife's brother sees Sivagami and wants to marry her. When she rejects his proposal, he tries to rape her. Her son kills him with a scissors. Sivagami tells the child to leave and holds the scissors alleged that she had killed him. She is arrested. 20 years later, Sivagami is released. Meanwhile, the rich man's wife learns of Sivagami's history from her husband. She is shocked and wants her to be immediately released from prison. Sivagami returns to their home. A girl living there, Kavitha sees Sivagami. They get along well. She takes Sivagami to the airport to meet her fiancé who turns out to be Sivagami's son. However he does not recognise her as he was much younger when he saw her last time. One day he finds a diary and sees pictures of his father, his mother and himself with his mother. Then he remembers Sivagami and asks her to come to his awards ceremony. During the ceremony, he asks his mother to present him the award to which she obliges. The film ends with both Sivagami and her son on the stage.