A middle aged Bisnu leads a simple life in a fishing village on the banks of the Brahmaputra. One cloudy morning, during the fag end of the monsoons, he finds a corpse enmeshed in his net. Taken over by an obsession about the boy and his village, Bisnu embarks on a journey across Assam that would open him up to a world he had no idea about and would have been better off not knowing.

Inspector Boro is an incorruptible, no-nonsense cop highly skilled in martial arts who gets suspended for bashing up a well connected gang of traffickers. A Superintendent of Police asks him to unofficially track down a girl named Sabrina Rai who has been missing for four days. While investigating, he learns that someone had taken her from her village to Guwahati city under the pretext of training her for the hospitality industry. While trying to track her down, Inspector Boro finds that her phone is switched off and she is missing from her hostel. He then heads to Guwahati and punches and kicks his way to the uncomfortable truth - Sabrina might have been entangled in a trafficking ring run by a corrupt policeman.

The movie portrays the soul and real ambiance of Majuli, the largest river island on earth. The movie which opens with a soul pleasing shot of the river Brahmaputra with a ship ferrying, takes us to the river island and introduces us to the unvarying and routine life of Moukon, Luit, Simanta, Joi, Topon, and Bhaskar. Moukon, a young carefree girl finds herself at the center of some mysterious deaths after which she is socially considered a jinx. Simanta, Joi and his friends are well qualified but are still in search of a substantial life. Life is also indifferent for Luit who moves from door to door by selling insurance policies and has no better resolutions for the future. Amidst all the scrambling there is also space for some untainted love stories at the core of Bornodi Bhotiai which takes the movie to its ultimate culmination.