Baskar and Vasanthi are college mates. When Baskar sends a love letter to Vasanthi, she complains to the
dean, who dismisses Baskar from college. Baskar later manages to obtain employment at a tea company with the help of his friend Sampath, who also shelters him since Baskar is homeless. Vasanthi approaches Baskar and apologises for her earlier actions. Baskar forgives her, and they both fall in love. Vasanthi lives with her mother and unmarried elder sister Geetha. Baskar rents the vacant portion of their house. One day when Baskar falls ill, Geetha nurses him and in the process, falls in love with him. She confides her love to Vasanthi who is heartbroken but decides to sacrifice her love out of respect for her sister. Since Geetha was responsible for raising Vasanthi, she is granted her wish, and Vasanthi convinces Baskar to marry Geetha. After Baskar and Geetha marry, they shift to
Coimbatore where Baskar has been transferred. Meanwhile, Vasanthi has obtained employment as a
typist. Her manager Raghu falls in love with her and expresses his desire to marry her, but she is unable to respond to his feelings. Baskar is unable to lead a happy life as he often thinks about his disappointment in love. Vasanthi writes to Baskar advising him to forget about the past and lead a happy life with Geetha; he relents. Shortly thereafter, Geetha becomes pregnant and returns to her original home where she delivers a son named Babu. Raghu again meets Vasanthi and proposes to her, but she tells him about her past and expresses her inability to respond to his love. Heartbroken, Raghu leaves her and resigns from his job. Vasanthi joins Geetha at their Coimbatore house following her mother's death. When Geetha falls ill, Vasanthi attends to all the household work. Baskar spends more time with Vasanthi than his wife, who suspects them of being in a relationship, and berates them both. Due to this, Vasanthi leaves them. Geetha, having realised that Baskar and Vasanthi loved each other, dies in guilt, leaving Baskar alone to bring up Babu, making him promise that he will find Vasanthi and make her the child's mother. He searches for Vasanthi all over the city, to no avail. Meanwhile, Vasanthi meets with an accident but is saved by a wealthy old man who allows her to stay in his house. The man's son arrives and is revealed to be Raghu, who Vasanthi agrees to marry. Through Sampath, Baskar learns about Vasanthi's impending marriage and rushes to the marriage hall with Babu. However, by the time they arrive, Vasanthi is already married. Baskar then leaves Babu to her as a wedding gift and walks away. == Cast ==