The film revolves around an old couple: Thavasi (Ilavarasu) and Pechi (Saranya Ponvannan). They have five sons: Bose (Vikranth), Raman (Natraj), Selvam (Arish), Lakshmanan (Prakash), and Pandi (Veerasamar). Thavasi and Pechi strive hard with their meager earnings to bring up their sons so that most of their needs are met. Bose falls in love with Annamayil (Monica), a nurse. Without knowing this, Thavasi and Pechi arrange Bose's wedding with their relative, for which Bose agrees as he does not want to make his parents feel bad. Annamayil also understands Bose's situation and accepts his decision. A few of the couple's sons are married, and trouble erupts in their family due to the daughters-in-law, who do not prefer a joint family and keep insisting on partitioning properties and leading a nuclear family. Thavasi, although uninterested in a nuclear family, agrees for the well-being of his sons. Also, Thavasi and Pechi come to know about Bose's sacrificed love towards Annamayil, which makes them more worried as Bose's wife is not kind towards him. Pechi gets sick, and the daughters-in-law start considering her and Thavasi as burdens. Thavasi and Pechi understand this and decide to end their lives. In the end, both of them commit suicide.