An eternal romantic falls in love with the girl his father has decided to get him married to, but will his past love affair prove to be a problem?

Jeganathan (Vijayakumar), a poor man, fell in love with Nagavalli (Srividya) who is from the richest family in the village and Jeganathan married her secretly. Nagavalli's father died in a heart attack and her brother Rathnavel (Radha Ravi) couldn't digest this humiliation. Jeganathan worked hard and became as rich as Rathnavel. The two men continue to hate each other. In an auction, Rathnavel's henchmen and Jeganathan's henchmen fight and Nagavalli is severely injured. Gopi (Karthik), Jeganathan's son who lives with his grandmother Periyanayaki (Gandhimathi), comes back to see his mother. Nagavalli dies and Gopi takes the challenge to unite the two families. So Gopi decides to marry Rathnavel's daughter Nalini (Kushboo).

Mayilsamy (Sathyaraj) is a petty thief who is determined to make it big in life, by hook or crook. Even it means going through a marriage with a stranger, a trusting village belle, Pappu (Devayani), deserting her soon after and warming his way into the heart of Puppy (Mumtaj), a wealthy heiress. Of course, he realises his folly by the climax.

Amusing complications ensue when two jobless men pass themselves off as college professors in this entertaining yarn. Thrown into company with a pair of well-heeled sisters, one reserved and the other fiery the impostors soon win the ladies' hearts, and the couples each tie the knot. But when the truth comes out, will the men ever get back into their irate wives' good graces?