Sharp (Simbu), a happy-go-lucky guy, loves Priya (Hansika), a college student, but later learns that she is enagaged to Anbu ( Aditya), a businessman-gangster. Priya wants them to remain friends and Sharp agrees, all the while scheming to make her fall in love with him.

Silambarasan
as Sharp

Hansika Motwani
as Priyamahalakshmi

Santhanam
as Tyre

VTV Ganesh
as Kutti Paiyaa

Brahmanandam
as MD

Adithya Menon
as Anbu

Aadukalam Naren
as Sharp's father

Sriranjini
as Sharp's mother

Misha Ghoshal
as Priya's friend

Jai Sampath
as Cameo
timesofindia
The opening scene of Vaalu features a robbery with men wearing masks that have the faces of the superstars of Tamil cinema — Rajini, Kamal, Ajith and Vijay. Before we start thinking that this is some sophisticated heist, we are shown what they are stealing — a crate of beer! And we get the sight gag...