Vinayagam is a brave person who lives with his four brothers, Murugan, Shanmugam, Kumaran, and Senthil, in the town of
Oddanchatram in
Dindigul district. They often get into fights, where
Advocate "Bail" Perumal bails them out whenever legal issues arise because of their brawls. Vinayagam hates the idea of marriage as he feels that his wife might create disharmony among his brothers. Though the four younger brothers pretend they don't want to get married, they all have secret lovers. The brothers learn through Vinayagam's childhood friend
Collector Subbu that Vinayagam, in his school days, was in love with a girl named Koperundevi (fondly called Koppu), and his brothers scheme to find her and reintroduce her to Vinayagam, to rekindle their relationship, but later find that she is married now and has kids. The brothers conspire to find another woman named Koperundevi because Vinayagam is not in love with that girl so much as her name, and when he meets another girl with that name, he is sure to lose his heart to her, just because she bears that name. Though initially reluctant, Vinayagam later falls in love with her. Vinayagam clashes with a goon, Vanangamudi, to take care of the village market. Vanangamudi tries to kill Vinayagam's brothers while Vinayagam kidnaps Vanangamudi's son. After clashing, Vinayagam banishes Vanangamudi from the town. While travelling by train to Koppu's village
Kaveripattinam, Krishnagiri, Koppu narrates her
family background to Vinayagam. Koppu's father, Nallasivam, was a respected man in the village who hated violence. His son was the exact opposite, who killed people, but when some goons killed him, Nallasivam refused to bury him and decided to make his village with peace and harmony. Later, a few goons enter the train, but Vinayagam bashes all the goons. Koppu is shocked to see Vinayagam, whom she thought was a non-violent person. She leaves for her village and tells Vinayagam not to come back again. Vinayagam and his brothers arrive at Koppu's village with a
clean-shaven look. He reveals to Koppu that he has changed and will never harbour violence again. He and his brothers are welcomed and respected by her family. Vinayagam is touched and impressed by their love, affection, and hospitality. Vinayagam discovers that a thug named Aadalarasu wants to kill Nallasivam and his family. Vinayagam confronts Aadalarasu in the Central Jail. He learns that Aadalarasu's father, Aavudaiyapan, was responsible for the blast of a
matchstick factory. Nallasivam complained against Aavudaiyappan, who was later arrested and killed himself by jumping in front of a
lorry from a police van. Aadalarasu witnessed his father's death and swore revenge against Nallasivam. Vinayagam challenges Aadalarasu that he will protect Nallasivam's family, and he finishes all the goons and solves all their problems without the knowledge of Nallasivam and his family. When Nallasivam's granddaughter finds
aruval under Vinayagam's jeep, Nallasivam orders Vinayagam to leave the town. Aadalarasu, who escapes from
death penalty, arrives to kill Nallasivam, but Vinayagam keeps him and his family in a safe place. Aadalarasu informs Vinayagam that he has kidnapped Kumaran. Vinayagam arrives in time and saves his brother, but Aadalarasu attacks him. Nallasivam and his family, who arrive at the place, realise the risk he took to save the family. Though brutally attacked, Vinayagam rises steadily, where he kills Aadalarasu and his henchmen. Nallasivam, impressed with Vinayagam's valour, gets Vinayagam and Koppu married. Thus, Vinayagam and his brothers get married with great pomp. ==Cast==