A notorious gangster Vedha surrenders himself to encounter specialist Vikram whom he challenges every step of the way by narrating his life events in the form of riddles that needs to be solved in order to capture him.
Sundararajan (Shiva) comes to Chennai from Coimbatore on his way to Saudi Arabia. He is received by Marthandam (S. P. B. Charan), a veterinary doctor, who is going to marry his sister soon. After the travel agent informs Sura that he cannot taste liquor or women in Saudi, he, along with Marthandam, goes to a wine shop to have the last gulp. It’s a dry day thanks to elections. Though disappointed, Sura is determined to taste the ‘quarter’ and starts his journey to various places in Chennai where he is told that liquor would be available. He goes to a politico who supplies wine for votes, a star hotel, an Anglo-Indian group of youngsters, a fish market, a gambling den, a kulfi shop and a brothel house among other places, all in search of ‘quarter’.
Chandru (Arya) and Bigilu (Lal) are close friends. Chandru is an expert auto driver & racer while Bigilu is a mechanic expert at customizing autos to run at the dream speed of 130 km/h. Son of Gun (John Vijay) is the chief of a rival group who wants to outsmart the duo. Chandru, the race champ tries to settle the dues for his auto through a race, which is almost a cakewalk for him. He and Bigilu challenge Son of Gun to a race, and a date is fixed.