A mysterious man is on the run. A super cop gets involved with him in a cat and mouse chase.

Crime Branch officer Animesh Datta is on a mission to catch the mastermind of a girl child trafficking racket in the Sunderbans. Will he be able to track down the culprit before more young girls disappear?

Baccha Shoshur revolves around Spandan, a helpless father and his three year old son Gutlu, who is undergoing weird behavioural patterns, which only Spandan knows about. What follows is the mystery that changes everyone's life.