Gopalakrishnan (Pandiarajan), a clever cook from Coimbatore, moves to an apartment in Chennai. He becomes quickly popular and appreciated among the apartment’s women, however, their husbands get jealous of Gopalakrishnan. Meanwhile, he falls in love with Usha (Kushboo). He decides to marry her with the support of his neighbours. After the marriage, Usha has just learned that Gopalakrishnan was already married. Gopalakrishnan got married with a girl (Sindhu) but she was already pregnant and she eloped with her lover that very evening. Usha is upset and refuses to live with him. Later, Gopalakrishnan finds a forsaken baby (by his ex-wife) in a dustbin and leaves the baby to an orphanage. Gopalakrishnan’s father (Manivannan), an army officer, comes to live with his son and he helps his son to win back Usha’s heart.

Vijay (Arjun) is a hitman who works for Sundaramoorthy (Radha Ravi). He kills anybody for a price, other than women and children and he lives alone in an apartment. Pooja (Pooja), a young girl, studies in a boarding school and comes to her father’s house for the holiday. Between her abusive father, selfish stepmother and an arrogant step-aunt, Pooja feels rather badly but she treasures her lovely little brother Dinesh (Mahanadi Dinesh). Pooja tries to befriend Vijay but Vijay is not interested. Her father is a drug smuggler. One day, a corrupt police officer Jayanth (Raghuvaran) kills Pooja’s family including her brother. Vijay decides to accommodate Pooja and Pooja compels him to teach her his skills as a hitman. What transpires later forms the crux of the story.