Varun (Vimal) and Anjana’s (Lasini) love story happens in the Ooty mountains (in Tamil literature, they are referred to as Kurinji); Gunasekar (Cheran) and Mallika’s (Muktha Bhanu) story happens in Tuticorin seashore (Neidhal); and Paul Harris Rosario (Arjun Sarja) and Divya’s (Surveen Chawla) story happens in the city (Marudham). The story revolves around these couples and the trials and tribulations they face.

Varun explains the story of his life where he had fallen with Anjana in spite of knowing that her engagement has been called off, but he later sacrifices his love after hearing Guna and Mallika's story.

Guna is a philanthropist who runs an organisation called "Punnagai," a rehabilitation center for jail prisoners. Mallika, a physiotherapist, silently pines love for him. When Guna failed to unite a prisoner (Aadukalam Naren) with his family, Mallika does the job. Impressed with her, he handles the responsibility of taking care of Punnagai to her and leaves the town.

Another story is of Harris, a swimming coach, and his student-cum-lover Divya (Varun claims Divya is his childhood friend, but there is no scene where they are together). Divya is disappointed for losing the swimming match, and her father Thiruvengadam (Thambi Ramaiah) advises another coach named Elango (John Vijay) to replace Harris with another coach, but Divya is adamant that Harris should be her coach. Meanwhile, Harris gets involved in a bike accident where his legs and hands have been hurt, but he encourages Divya to take part in the Olympics swimming match. Divya practices for the match rigorously and wins the competition by finishing it in less than 56 seconds.

In 2016, Varun narrated these stories because they prompted him to write a novel called "Moondru Kaadhal". Harris arrives at the press conference of the book release and says that he is alive because of Divya. She is the epitome of goodness and confidence, and he narrates that though she had won the match, she died due to heart attack on the swimming pool. The film ends with Harris uttering Kaadhal Ketpadhalla Koduppadhu ("Love is not to be asked but to be given").