Tamil-language action thriller. Two underworld gangs, one led by Periyavar (Raghuvaran) and the other by Chinna (Prakash Raj), have been pitted mercilessly against each other for years. Periyavar's gang has always been the strongest - until now. The powerful and fearless Shekar (Vikram) joins Chinna's gang, posing a new threat to Periyavar and his men. Meanwhile, both gangs are being targeted by Chennai's new police commissioner (Ashish Vidyarthi).