Lalitha is the eldest daughter of a pious and conservative Brahmin family. She has eight siblings and poverty rules reign. Her aunt comes with her unmarried daughter and starts living with them. they are a spendthrift and creates lots of problems. She decides to take up the family mantle and goes to work. She starts work as office help. She travels to Madras to meet a politician for requesting her brothers medicine seat. She was advised to go home. Another person promises to get a seat for her brother but forces her to something else. She tries to commit suicide and drops it when she talks with her brother. she leaves to Hyderbad with a promotion. Due to family needs and ill fate, she ends up as a prostitute but manages to settle all her brothers and sisters. when she returns home for a visit, her mother realises something is different with lalitha. when Kamal's marriage with the local girl is fixed her aunt makes trouble and spreads the truth with all. her aunt wanted to marry her daughter to Kamal. Her family ditches her when they come to know about her dark side. Thangavelu, a man who was once rejected by her marries her. She loses her sanity in the end.