Bijoy, a mentally challenged guy stays in a house with his two brothers, a sister in law and his nephew. The only two people who love him is his eldest brother and his nephew and the old servant of their house. His sister in law ill treats him as does his other elder brother.
One day when his sister in law’s younger sister Rumi comes to visit her sister along with her mother, she immediately takes to Bijoy and starts treating him like a human being which no one does barring Sujoy (Bijoy’s eldest brother) and nephew. When she invites him for her birthday, he turns up at her birthday but is insulted by his sister-in law.Rumi’s marriage is fixed with a guy whose father wants Rumi’s parents to finance his education. One the day of her marriage when her father is unable to pay the entire money, her future father- in-law threatens to disrupt the marriage.Rumi decides not to get married to the guy and asks them to leave.Bijoy who had been locked up so long , manages to comes out and applies vermillion on her forehead and ‘marries’ her. After their marriage both of them go away to a place outside Kolkata so that Rumi can tend to him and make him more normal as he is basically a normal person. He does become quite normal and even save his brother’s life when he land up with his family and tries to save Bijoy when he had been kidnapped by goons. His sister-in-law begs forgiveness.