Durai Singam is an honest sub-inspector of Nallur, a small village in Thoothukudi district in southern Tamil Nadu, assisted by his bumbling colleague Erimalai. He belongs to Nallur with his father Soundarapandi, having a respectable status in the village. His family business is provision stores and Durai Singam wants to join it, but he joined police due to his father’s wishes. He resolves most of the problems in his village with nonviolence and mutual counselling. He uses force only when the situation demands it, thereby gaining much reputation and love from the villagers. Mahalingam, an industrialist in Chennai and a friend of Soundarapandi, comes to the village with his daughters Kavya and Divya. Durai Singam initially thinks Kavya as a thief when she is about to prank her cousin by wearing a tiger costume. As Durai Singam is roaming around the village, he accidentally slaps her. As Kavya is about to take revenge on Durai Singam, he apologizes to her, Kavya got moved by this and slowly fell in love with him. After some hilarious incidents, Kavya proposes to Durai Singam. Initially taken aback, soon Durai Singam reciprocates Kavya’s love.