Dhananjoy Chatterjee is a burnt-out but bright police detective, who has been in hot pursuit of Arko Bhattacharya, a serial killer. Arko has been on a vicious killing spree, with his victims seemingly being random people. There does not seem to be any connection or common factor between any two murders. The case takes a toll on Dhananjoy, and his wife, Malini leaves him, along with their son, Gogol. The murders stop and the killer suddenly disappears. With the trail turning cold and with his personal life in shambles, Dhananjoy takes to drinking. After an inexplicable and mysterious hiatus, the murders resume, forcing Dhananjoy to kick the bottle, pick up the pieces, and join the pursuit of the dangerous killer once again.
