Bitti (Kriti Sanon) is a young contemporary girl in Bareilly,Uttar Pradesh, who works in complaint department of electricity board & is the apple of her father’s eye. Like most Indian mothers, Bitti’s mother wants to see her daughter get married to a nice man from a good family. Bitti, however, wants a husband who understands her and more importantly, who accepts her exactly the way she is. A suitor comes but after knowing his disgusting mindset, she lies about not being a virgin & gets rejected. Her mother gets irritated with constant rejections but father understands her. She gets heartbroken after hearing her parents conversation & later pours her heart out before her father who consoles & cheer her.
That night she leaves her house & despite not knowing to go anywhere takes a train. Meanwhile, for time pass she also buys a book from the platform. She feels she has found that special someone when she reads a book called ‘Bareilly Ki Barfi’ and finds herself described and accepted in the pages of the book. She returns to her home same night. She longs to meet the writer and thus one day decides to search for the supposed writer of the book, Pritam Vidrohi (Rajkummar Rao) She, along with her best friend Rama, goes back to the same book store from where she had brought that book & asks about its writer. The owner, in turn, takes her name & address to inform them in case he gets the writer. The book shop owner leads her to Chirag Dubey (Ayushmann Khurana), who owns a printing press and who helped publish the book.
What Bitti doesn’t know, is that Chirag is, in fact, the true author of the book. The bookshop owner, also the best friend of Chirag, knew that he is the actual writer. Chirag wrote that book 5 years ago, when he had a heartbreak when his girlfriend Bubbly married someone else. He wrote that book describing his girlfriend Bubbly & their love story. But since giving his own name as the writer might destroy his ex-girlfriend’s reputation, he coaxes his other meek so-called friend “Pritam Vidrohi” to have his name as the writer of the book. Vidrohi agrees but gets so scared of the possible future scenarios, that he leaves the city without telling anyone. 5 years gone, that no one had purchased a single copy of that book except Bitti on that day.