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Hamsaveni (Revathi) after channelling the voice of the Goddess in childhood, is treated as such by her grateful village after water is found after a drought. Her elder brother Vallatharai (Vijayakumar) exploits his young sister's powers to make himself rich. When Hamsaveni falls in love with misunderstood drunk-with-heart-of-gold Thambi Durai (Karthik), Vallatharai is unhappy with her decision, due to the difference in status between the two and, more importantly, he can see his money supply running out. So Vallatharai tries to put Thambi Durai off in various ways from marrying his sister.