Govindaraja Mooriyar is a respected person in a town living with his wife and two sons – Arivazhagan and Madhi. Ilayarani also hails from a nearby town living with her parents Rajangam, and Kalaiyarasi as well as an elder sister Selvarani and elder brother JP. Madhi falls in love with Ilayarani which she reciprocates.

Karunakaran is a local business man and a relative of Rajangam, however, enmity prevails between both families. Kalaiyarasi plans to unite both families by getting Selvarani married to Karunakaran’s brother. To everyone’s surprise, Selvarani elopes on the day of her wedding along with Arivazhagan with the help of Madhi. It is revealed that Selvarani and Arivzhagan are in love. Knowing this, both families disown the couple forcing them to stay alone in the outskirts of the town with the help of Madhi. Selvarani is conceived and Madhi convinces both his and Selvarani's families and are united.

Karunakaran suggests his brother to be married to Ilayarani for which everyone agrees. Govindaraj learns of Madhi and Ilayarani's love affair and is infuriated. Madhi decides to sacrifice his love so that Rajangam and Karunakaran's families can be united. Madhi promises Govindaraj that he will move away from Ilayarani's life. On the day of Ilayarani's wedding, she goes missing and Govindaraj doubts Madhi as he has planned something. However, Madhi denies any wrong doing but everyone in the marriage hall learns of the love between Madhi and Ilayarani.

Finally, it is found that Ilayarani was still staying at her house and calls Rajangam and JP requesting to cancel the wedding as she is not interested in this. Everyone decides to get Ilayarani married to Madhi and they are united at the end. Madhi feels sorry for Karunakaran’s brother as his wedding is cancelled twice because of him and gets him married to another girl.