A policeman accepts bribes from corrupt politicians and local thugs to help them in their illegal work. However, he decides to correct his mistakes after he falls in love with a woman.

Chitambaram doesn't want his daughter Kausalya to marry Suresh. Suresh then decides not to marry Kausalya without her father's permission. Finally Chitambaram relents and the lovers reunite.

Two families stay in identical bungalows, adjacent to each other, tracing their friendship to over forty years. Their respective progenies Chinna and Chella (Ajith and Jyotika) are childhood buddies, their easy camaraderie and strong bonding carried over to their adult years.

Kanagavel, an aspiring police officer, beats up a man for misbehaving with his girlfriend. That man turns out to be a corrupt police officer who later starts harassing Kanagavel and his family.

Fate keeps bringing Siddhu and Madhu together, but they only realize the true extent of their feelings when they help unite their mutual friends.