The film is the story of Rajeevan, an advocate, and Nandita Menon, a writer. Rajeevan is married to Rekha, a bank employee, and has two kids. Nandita is married to Mukundan, a businessman in the Gulf, and has a daughter. They lead their normal family life happily. A mix-up in the cakes they ordered for their respective kids introduces the protagonists and their backgrounds.
Both meet each other accidentally and in due course, their relationship becomes intimate (mentally). Their tastes and thinking are almost alike.
When Rajeev narrates an incident in his childhood bearing uncanny resemblance to Nandita’s short story, she realizes he is her childhood friend on whose shoulders she leaned in times of distress. A chemistry develops between them which Rajeev mistakes to be love and expresses his feelings to her. She responds predictably and tries to alienate him, ignoring him. Later, she gifts her book, "Megha Malhar", to him, revealing that she is his childhood friend.
Rajeev agrees never to meet her again and meets her for the last time. They travel together to Kanyakumari where they had spent their childhood together. They decide to part ways and live as strangers.
A critic from Screen wrote that "It is, no doubt, that seeing Meghmalhaar would be a really different and unforgettable experience for the viewers who have been seeing dry, stale, meaningless stuff in the name of cinema".[2] A critic from Cinesouth wrote that "May be, by ordinary standards, this movie might not become a grand hit, but it's a good attempt at making good movies. Something that speaks about the beauty of love and of family bonds".[3]
