A badass cop Vikram leads a special task force formed to eliminate a kickass Vedha’s gang running amok on the streets of Chennai, making a mockery of Law and Order. An encounter planned by a Vikram’s friend Simon, kills Vedha’s trusted aides and brings him out of hiding. Vedha lays his clutch on Vikram and engages in a disturbing mind game of sorts which results in a quest to reveal the truth behind that fateful encounter.

Chandru (Arya) and Bigilu (Lal) are close friends. Chandru is an expert auto driver and racer, while Bigilu is a mechanic expert at customizing autos to run at the dream speed of 130 km/h. Pichchai aka 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. Bigilu, meanwhile, introduces Chandru to his sister, who runs a biriyani shop. Chandru is attracted to her daughter Rani (Pooja), and woos her. The affair grows stronger, and the two end up having sex. However, Chandru is not interested in long-term commitment and tells Rani, who curses him and moves away. On the D-day, Chandru is distracted by the memories of his love affair and loses the race and his auto. Later, Bigilu comes to know about the affair. The subplot of a smuggler’s search for missing pearls adds flavour to the proceedings. The unpredictable and fun-filled climax puts everything in order.

Sunderrajan aka Sura (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 and Marthandam go to a wine shop to have the last gulp. It is a dry day thanks to elections. 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’. During his trip, he meets Saraswathi aka Saro (Lekha Washington), who attempts suicide after her parents scold her, and King-Prince, a father-son duo (both roles played by John Vijay) who runs a gambling center. How Sura, in the company of Marthandam and Saro, succeeds in his mission and leaves for Saudi forms the remaining story.