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Ajay (Siddharth) comes to Kasi, where his thoughts and ideas on life and death undergo a sea change after he meets a young boy. He relocates to Chennai and stays in a house owned by a couple S V S Murthy (Mouli) and Jayam (Geetha). They treat him as their own son. A do-gooder, Ajay with his jovial nature wins the heart of all those whom he comes across. Vidya (Nithya Menen), a photo journalist meets Ajay and falls for his good nature. Ajay with the help of Vidya even gets street children obtain sponsorship for their education. But things take a turn when Vidya expresses her love to Ajay. He quietly walks off the place and decides to leave Chennai. But a rude accident to Vidya puts the responsibility on Ajay's shoulders to get her back to health. He takes her to USA for a surgery. Meanwhile a flashback reveals that Ajay was a successful doctor in the United States and who led a happy life.