Sudha, a 22-year-old unmarried woman, lives in an apartment in
Madras with her younger sister Indhu and grandfather Murugesan. She is engaged to her colleague Gopi. The owner of the tenement wants all the families to vacate the place as he intends to construct another building on the same site. Sudha's attempts to find an alternative house are unsuccessful as her family cannot afford the rent they fixed. At this juncture, Iyengar, one of her colleagues, advises her to start building a new house. Though initially hesitant, she decides to build a house after Iyengar motivates her. Sudha's grandfather already owns two construction sites on the outskirts of the city. They decide to construct the house on one of them and sell the other one to raise money. In addition, she also seeks a housing loan and pledges her jewels for money. During this time, Sudha gets introduced to a building contractor who drafts a plan for the house. To get the plan approved, they had to bribe a government official. By this time, unexpected rains halt construction, thereby inflating the cost. Though Gopi comes forward to provide financial assistance, Sudha declines, stating that his sister's marriage would be affected if he provided money. A kind-hearted Mangamma, a construction worker, helps Sudha with the construction. When she realizes the contractor is stealing materials from the site, she informs Sudha, which in turn leads to the contractor quitting. Mangamma, her supervisor, and Iyengar help Sudha during this time as the construction work resumes. Meanwhile, as the loan sanctioning gets delayed, Sudha seeks financial help from her superior. She becomes even more dejected to know that he is a womanizer. With all her funds exhausted, she decides to halt the construction. However, Gopi offers some assistance, and the work continues to progress further. An excited Murugesan visits the site alone on a Sunday and dies while returning home. Sudha becomes depressed over the situation. When the house is nearing completion and when Sudha and Gopi appraise each other, an official from the
Metropolitan Water Authority arrives at the site and asks them how they can construct a house on land already acquired by the authority. In the end, Sudha is shown sitting in the panchayat office, and a voiceover states that she is seeking justice in the court. == Cast ==