Naveen (Naveen), Sendrayan (Sendrayan), Kuberan (Kuberan), and Vellaichami aka White (Rajaj) are four men who are trapped in a cycle of poverty. The story begins with a meeting between them in a police station where they are held in connection with a theft case. Disillusioned with society and their place in it, they plan to burgle the mansion of White's treacherous uncle Bhaktavatsalam (Jayaprakash), whom they believe has left town with his family to go on a pilgrimage. Instead, as the four men plan to break into Bhaktavatsalam's residence, they discover that the family is still inside the house. Thereafter, the criminals take Bhaktavatsalam and his entire family hostage. What follows is a bizarre and comical hostage situation. At one point, the home intruders even force their hostages, including Bhaktavatsalam, his wife Mandothari (Anupama Kumar), and his grown daughter, Karpagavalli (Oviya) to stand upside down on their heads. Soon, a variety of characters congregate to the house, and the four bandits get involved in a quagmire involving moneylenders, enforcers and the mafia.