Pudhu Pettai (2006)

A slum dweller, Kokki Kumar (Dhanush) returns from a movie to find his mother murdered by his own father. As his father deranged advances towards him he runs away and starts begging on the streets until he is arrested on false charges. Prison exposes him to a whole new culture and a set of people who train him in a life of crime and violence, until Kumar becomes a consummate gangster. Delving further into the dark world, he murders many to become a powerful mob kingpin and joins hands with crooked politicians in his thirst for more power. As he continues to earn enemies everywhere, Kumar's life is threatened from all directions. Can he survive the wrath of his enemies?