Embedded with youthful comedy and exuberant romance, this contemporary romantic comedy follows the fluctuating fortunes of three friends Kaliyaperumal (Santhanam), Power Kumar (Srinivasan) and Shiva (Sethu), who have no occupation other than getting drunk and chasing girls.
The twist in the tale happens when a pretty girl named Sowmiya (Vishaka) moves in with her family to the house opposite to that of Shiva. All three friends fall for the girl's beauty and make a gentlemen's agreement to let the girl choose her boyfriend.
The three attempt different methods to woo her. Shiva helps Sowmiya's aunt (Kovai Sarala) in household work; Kaliyaperumal joins Sowmiya's uncle (Ganesh) to learn singing; Power joins Sowmiya's father (Shivshankar) to learn Bharathanatiyam. One day, when none of her other family members are home, the three eventually profess their love, leaving Sowmiya confused. Following the advice of her neighbour (Devadarshini), Sowmiya reveals to all three that she loves actor, Simbu.
The neighborhood boys then decide to bring Simbu as a gift for Sowmiya's birthday, but Simbu says he does not know anyone named Sowmiya. They then hire a thug named "Kolaveri" David to kidnap Simbu, but he kidnaps Sowmiya instead when he learns he is supposed to kidnap Simbu. After Simbu refuses to help her, Shiva, KK and Power go and save Sowmiya. Will they succeed in saving her? Which one of the three friends will succeed in winning the heart of Sowmiya?