BP is about four teenage friends (Avya, Bhagya, Chiu and Dolly), who over hear that, a friend, a resident of their colony, Jyoti tai, has left their colony, as she has brought disgrace to her family.  Having received unsatisfactory explanations from their parents for Jyoti tai's exit. It becomes imperative to find out what exactly was her disgraceful act. Kids decide to take up this challenge.  In this journey to discover, they end-up bonding little too much with their over mature school-mate 'Vishu', the guiding star for the foursome. He enlightens them by throwing his divine light upon blue films. He feels, one has to read, watch, and if need be, perform to understand the true meaning of life (read SEX).