A man named Raj meets a woman named Shanti in Madras and falls in love with her. Shanti does not reciprocate his love and leaves for her home in Bangalore. Shanti's father Sokkalingam and his new wife Thangam decide to honeymoon in Kashmir; Shanti also wants to come. A friend of Sokkalingam suggests an alliance between Shanti and his nephew Raj, who is now in Madras. Raj-2 abandons his wife Lalitha, who he had secretly married, when he learns of this proposed alliance; he leaves for Bangalore but misses the train. Raj-1 arrives in Bangalore, where Sokkalingam mistakes him for his friend's nephew. Sokkalingam and Thangam leave for Kashmir with Raj-1 and Shanti, who still dislikes Raj-1 but eventually returns his love.

Raj-2 reaches Kashmir in search of Sokkalingam. Lalitha, fearing the safety of her husband, also reaches Kashmir in search of him. Lalitha meets Raj-1 and stays in his house; she also meets Sokkalingam and tells him she is married to "Raj". Sokkalingam misinterprets this as Raj-1 and fires him as Shanti's manager. Meanwhile, Raj-2 meets Sokkalingam, explains everything and replaces Raj-1 as Shanti's manager, despite Shanti's dislike for him. Shanti later learns Lalitha is Raj-2's wife and reconciles with Raj-1 while Sokkalingam and Thangam are still unaware.

Raj-2 learns Shanti loves Raj-1 and becomes jealous. At the same time, he meets Lalitha, who he orders to return, otherwise she will be killed. Lalitha flees but secretly writes Raj-2 a love letter. Raj-2, touched by the letter, decides to take Lalitha on a boat ride but plans to kill her and frame Raj-1. When Lalitha joins Raj-2 on the boat ride, he forcefully rides the boat, causing her to fall into the lake. Subsequently, he frames Raj-1. Sokkalingam reports Lalitha's murder to the Kashmir Police, who chase Raj-1, who elopes with Shanti—his only source of an alibi.

Raj-1 and Shanti run into a forest for shelter, where they discover Lalitha is still alive and has been captured by a group of terrorists. Raj-1 and Shanti are put into the same prison as Lalitha, who reveals she washed ashore and was discovered by one of the terrorists. He started torturing Lalitha and she pushed him over a cliff to his death, and was imprisoned for murder. A gypsy dancer from the terrorist group helps them escape the prison but nearby guards see them and start shooting at them. The three escapees climb onto a boat, which develops a crack and starts sinking, leading to Raj-1's separation from Lalitha and Shanti. Raj-1 swims ashore and the police capture him.

During Raj-1's trial in the high court, Shanti and Lalitha arrive, leading to his acquittal. The letter Lalitha wrote to her husband is discovered and after reading the last line, in which Lalitha advised her husband to kill her if wanted, the court suspects Raj-2 of her attempted murder. Lalitha claims she fell into the lake and does not identify Raj-2 as her husband. The case is dismissed, and Sokkalingam and Thangam continue their honeymoon.