Kuselan (Vijayakumar) and his wife Suseela (Manjula Vijayakumar) are the heads of a large family which consists of their three sons - Kanna (Prabhu Deva), Aavudaiyappan (Prabhu) and Indiran (Abbas) - and six daughters - Urvashi (Rambha), Easwari (Roja), Uma (Kasthuri), Aishwarya (Maheswari), Hema (Preetha Vijayakumar), and Ezhilarasi (Suvalakshmi). Azhagappan (Parthiban) is the family's loyal servant, while Krishna (Napoleon) is their family doctor.

The movie opens with Kuselan's 60th birthday celebrations, but he gets a heart attack. At the hospital, the family is informed that Kuselan will not live long and decides to keep him comfortable in his last days. From the devastated family, Kuselan asks for one last favour: all his children get married before he dies. The children agree, and a statewide ad is put out saying that those chosen to marry Kuselan's children would get a piece of the family properties and a crore in cash. Needless to say, the mention of wealth brings in potential brides and grooms by the truck full to be interviewed by either Gnanapithan (K. Bhagyaraj) and Arivozhimangai (Urvashi) or the doctors Mithrabuthan (Janagaraj) and Panchabootham (Senthil).

Kuselan, Suseela, and Krishna are happy upon thinking that everything would happen as planned, but there is a major hitch that they did not know about: most of the children have already fallen in love. Arunachalam, Aavudaiappan, and Indiran have fallen love with Khushbu, Savithri (Ishwarya), and Heera respectively. Easwari, Uma, Aishwarya, and Hema are in love with Kanna (Prabhu Deva), Pallavan (Pandiarajan), Gautham (Vineeth), and Kanthen (Livingston) respectively. Each of them gets their lover ready for the interview, and after some hard work and bribing, they are all selected. Urvashi is linked with the absent-minded doctor Ram Kumar (Karthik), who shows up at the interview upon thinking it is an interview for a doctor's post in a clinic while Ezhilarasi pairs with Azhagappan.

Kabilan (Mansoor Ali Khan), with Vichitra (Vichithra) in tow, tries to worm his way in as a groom, and when that effort fails, he kidnaps the nine brides for ransom. Krishna calls his friend ACP Sanjay IPS (Arjun Sarja), who defeats Kabilan and his aides, defuses the bomb planted by Kabilan at the marriage hall and saves the brides.

After finding the brides and after the marriage, Kuselan explains that his heart attack was a joke, and he wanted them to get married.