The film narrates the story of the invention of Rosogolla. Nobin Chandra Das's father dies soon after Nobin's birth and the faces financial crisis. Nobin decides to become a sweet maker. His love interest (later wife) Khirodmoni suggests and inspires him to invent a new type of sweet. After years of hard work and multiple failures, Nobin invents Rosogolla. This invention makes him famous in West Bengal.