The film is centered around a young boy Burun who gets 13 in Maths, the subject which many of used to dread in our childhood(for those of us who didn’t have a thing for numbers and or much of the grey matter).The same happens to Burun as well as he wants to run away from it all. He does actually run away to Gosaibagan and comes across Nidhiram, the friendly ghost (the Indian version of Casper).He helps Burun in everything and suddenly everything seems to be like magic and he becomes a hero.
But then the film doesn’t concentrate on only on Burun and Nidhiram.It takes a different turn.Habu, the dreaded dacoit who has been in prison for 20 years and loves to dress up as a tiger and frighten people along with his gang appears on the scene. It seems he has a to settle a score with Burun’s grandfather who is a Kabiraj.He therefore kidnaps Burun and keeps him in his den. It is then up to Burun’s eccentric Maths teacher who is always mumbling formulas and equations (even during his meal tries to work out equations on his plate!)to rescue Burun and his friend Phatik with the help of Nidhiram.Habu turns a new leaf and Nidhiram becomes Burun’s grandfather’s compounder!