| Director | Venkat Prabhu |
|---|
The movie starts with Sugan and his friend Parasuram being chased by cops. The flashback shows Sugan as a womanizer who has a weakness for biryani. Parasuram is his childhood friend. Sugan's womanizing always gets him into fights with his girlfriend Priyanka. Sugan and Parasuram attend a function for a branch opening of one of their offices, where they meet Varadharajan, the chief guest for the ceremony. In the meantime, it is shown that CBI officer Riyaz Ahmed has been deputed to track Varadharajan's illegal activities. Varadharajan is impressed with Sugan and later decides to make him his son-in-law; this decision gets him into an argument with his elder son-in-law Vijaykrishna.
Varadharajan later hosts a cocktail party and invites Sugan and Parasuram, where they get drunk. After getting drunk, Sugan, who craves biryani, searches for a biryani shop. There, they both come across Maya, a prostitute. The very next day, they find police cars searching for Varadharajan, who is missing. Meanwhile, Sugan and Parasuram find Varadharajan's corpse in their car trunk. They are blamed for Varadharajan's death and are chased by the police, which is the starting scene of the movie.
Sugan and Parasu go to their friend's house, and Parasu sends a picture of Maya to his friends. The next day, one of their friends finds Maya at Egmore Railway Station. Sugan arrives, and Maya confesses that she spiked their drinks upon a police officer's orders. As Sugan tries to get more information, a female cop stops Maya from telling the truth and later kills her. Back at home, Sugan gets a message from the female cop, which makes him realize that she is not a police officer but an assassin. Her next victim is none other than Sugan's sister Varalakshmi. At the temple, Sugan's friend Hari, brother-in-law Subbu, and Varalakshmi get into a car accident orchestrated by Vijaykrishna, and the female assassin captures Varalakshmi. Sugan gets a call from Vijaykrishna that he needs Varadharajan alive so that he can give Varalakshmi back to Sugan.
Sugan decides that Parasu should impersonate Varadharajan alive since the real Varadharajan is dead. He comes there with Parasu but finds the assassin trying to kill Sugan. Vijaykrishna wants Varadharajan back, but it was not he who called Sugan. Sugan and Vijaykrishna get into a fight along with Sampath, who gets into a fight with the hitwoman. Another police officer, ACP Vikram, kills the female assassin and returns Varalakshmi safely. A few days later, at Varadharajan's funeral, Sugan learns the truth about Varadharajan's death. A man named Avinash was in love with Varadharajan's daughter only for money, but Sugan and Parasu inadvertently stopped their love on the way to the new branch opening.
Avinash uses his brother to get his love back by bringing Sugan and Parasu using Maya, and Maya used drugs to make Sugan and Parasu very drunk. Then the assassin arrives and kills Maya, so she does not tell Sugan the truth. Sugan figures out that Avinash's brother, who is none other than Vikram, was behind everything. Soon, Riyaz and Vijaykrishna also find out the truth. Riyaz tells Sugan to kill Vikram, Sugan fights with Vikram, and they both fall from the office into the swimming pool below. What happens to either of them is unknown.