This family oriented social drama revolves around Anirudhan, who belongs to a middle-class family, and works as a sales manager of a private firm. His family comprises his father, grandmother and a sister; a typical shy village girl.
As part of this job, Anirudhan travels to various towns. On one location, he stays at a particular lodge, barely makes a lot of friends, especially Sukumaran, his roommate at the lodge. Sukumaran is a sophisticated man from an urban background, and despite Anirudhan's conservative, traditional beliefs the both of them become fast friends.
One day, a young girl comes to their lodge and asks to meet Sukumaran. Anirudhan and one of his friends assume that she must be Sukumaran's girlfriend. Later they make fun of Sukumaran and are left with the suspicion that he is withholding some important information from them.
Some days later the same girl arrives there again. Due to his simple, rugged appearance, she mistakes Anirudhan for being a servant. Sukumaran then shocks everyone by stating that the girl is his only sister, not girlfriend as they had suspected.They go with their daily routines when a telegraph arrives with the news that Anirudhan’s grandmother is ill. Anirudhan decides to leave for home at the earliest. Sukumaran also joins him.
At home he finds his grandmother a little injured, but safe. Sukumaran gels easily with the family and charms one and all, including Sujatha, Anirudhan's sister. Soon Sujatha and Sukumaran fall in love and their marriage is fixed. When Anirudhan agrees to his marriage to Sujatha, Sukumaran decides to return the favour and proposes that Anirudhan should marry his sister. Both of them get married.
Sukumaran's sister, Neelima is a city-bred, sophisticated young woman with modern beliefs. Naturally, she finds it very difficult to adapt to the culture and conservatism of the village. Tension and conflict begin to affect Anirudhan and Neelima's marriage. Soon, Sukumaran and Sujatha also begin to have clashes due to differences in their upbringing, belief system and lifestyle.
In a short span of time, Sukumaran learns of Sujatha's pregnancy but feels shame for the early pregnancy and also thinks that it will curtail their freedom. Meanwhile in Anirudhan's case, Neelima is very conscious about not getting pregnant, because she feels that her reputation amongst her urban friends may be tarnished, if she became pregnant so soon after marriage. Anirudhan finds this difficult to understand, but somehow tries to be supportive of Neelima’s decision.
Neelima then tells Anirudhan that she has gotten a job opportunity in an institution where she studied as a tutor. But Anirudhan, because of his conservative and complex nature turns down her plan to join the post. Later, her parents come to their home and tells him about a job opportunity that might fetch him good fortune abroad. They also tell him that when he is abroad Neelima can continue here by joining for the job opportunity she has gotten. This infuriates Anirudhan and he thinks that he is being set-up by her parents. Anirudhan and Neelima get into an argument that becomes so heated that Anirudhan loses his temper completely and slaps Neelima, who promptly leaves the house.
Sukumaran tries to solve the problem telling Anirudhan to adjust with Neelima taking into consideration of her upbringing as an urban girl. However Anirudhan is reluctant to understand the point and he stays firmly on his point that it was not his mistake that she left him. Sukumaran who is desperate sends his wife Sujatha and his son to her home. Anirudhan’s father arranges a meeting to solve the problem with him and his wife’s family but it fails miserably.
Apart from this incident, Raghavettan, the cook at the lodge falls ill and when they meet (Anirudhan, Sukumaran, Ravi and the owner of the lodge) him he tells him that they should live happily with their wives. The team then decides to stop the skirmishes. Anirudhan and Sukumaran reconcile and they play a drama to unite Anirudhan’s wife with him. It becomes a success. At Anirudhan’s house where Sujatha is now with her son, another ploy is dramatically created (this time by Sujatha) with some twists and turns with the result of Sujatha reconciling with Sukumaran and the movie ends on a happy note.
