Arjun (Vinay) is an IT professional who resigns his job in London and returns to India, following his father's sudden death. He decides to set up a real estate business in Chennai from the funds he has saved so far. He goes to the bank to withdraw the money, but is shocked to see that only Rs.18,000 is available in his account. He estimated the amount to be Rs.65 lakhs. Arjun doubts that his father must have invested the money somewhere in India. He inquires with his father's friends to get to know about the money. At last, Arjun finds that his father has purchased a house in Madurai with the money, but also is shocked to know that his father had another wife named Chandrika (Malavika Avinash), who is a French teacher and has a daughter named Brinda (Lekha Washington) through her.

Brinda gets admission to study in MIT in the US, but her education loan is rejected. She decides to sell the house in Madurai and get the money needed for her education. Arjun comes to meet Chandrika and Brinda, asking Brinda not to sell the property as it was purchased through his money. Chandrika understands that her daughter's activities are not right and the house should belong to Arjun. Brinda is short tempered and does not listen to Chandrika. Chandrika hands over the house documents to Arjun, and he leaves to Madurai to sell the house.

At Madurai, he meets Durai Raj (Nizhalgal Ravi), a chilli vendor, and his daughter Annapurani (Bhavana), who are the tenants. Durai is a friend of Arjun's father. Arjun explains his situation and requests them to vacate the home so that he can sell. To convince Annapoorani, Arjun cooks up a story that both Annapoorani and Arjun are childhood friends. To his surprise, Brinda comes to Madurai to prevent Arjun from selling the property. She approaches Guna (Kishore), a local goon, to help her from stopping Arjun. Guna comes along with his wife Poongodhai (Vasundhara Kashyap) to the registrar office to stop the deal. A quarrel erupts between Arjun and Guna, and when Guna tries to hit Arjun with a hammer, Arjun hits the hammer's head, which ends up hitting Poongodhai, and she dies. This angers Guna, and he wants to kill Arjun.

Arjun escapes to Chennai with Brinda, but Chandrika passes away, and Brinda has no one to care for. Arjun takes Brinda to his home and asks her to stay with him, and she hesitantly agrees. Slowly, Arjun develops affection towards Brinda and decides to give the money to her for education. Annapurani comes to Chennai for a volleyball match, and love blossoms between her and Arjun. To Arjun's surprise, Arjun and Annapurani were really childhood friends and were so close during childhood. Arjun decides to leave to London and join his previous job as Guna keeps searching for him. On the day of Arjun's flight to London, Guna kidnaps Brinda. Arjun comes back from the airport to rescue Brinda, and in the fight, Guna gets killed. Brinda realizes her mistake and gets close with Arjun. Finally Brindha, Annapurni, and Arjun unite.