Thyagu falls in love with Bhama, a Tehsildar’s daughter, and their engagement is arranged. When Ramu Shastrigal and Visalam go to Udaiyaar's house to invite him for the engagement, they meet Thangavelu, who has returned home and ask him where he met Lalitha. He remains silent, but after they leave, tells his father how and where he met Lalitha. Lalitha's parents overhear this and are shocked; Ramu Shastrigal and Thyagu disown Lalitha. The Tehsildar agrees to continue the wedding only if Lalitha is sent out of home, and she is mercilessly thrown out by Thyagu and Ramu Shastrigal. Udaiyaar, who understands her sacrifices, takes her to his home. To give her the dignity he deserves, he requests Thangavelu to marry her, which he accepts. The wedding of Thangavelu and Lalitha takes alongside Thyagu's wedding with Bhama. Though Lalitha is grateful to Udaiyaar and Thangavelu for their magnanimity, the trauma she has undergone results in her becoming insane.