Ganesh and his sister travel to Kolkata for her education at a fine arts college, and Ganesh gets a job as a taxi driver. One day, Ganesh informs the police about a criminal`s whereabouts, which causes the gangsters to attack him.
However, Ganesh fights back with a vengeance and goes on a rampage. Who really is he and what is his past? The unravelling of this plot forms the crux of Vedalam.