Momtazuddin Ahmed (Bilu's Father)Nazma Anwar (Bilu's Mother)Meher Nigar (Dilu)Shila Ahmed (Bilu)Abul Khair (Bilu's uncle)Asaduzzaman Noor (Ronju, lodging master)Afzal Sharif (Kader)Mozammel Hossain (Orphanage manager)Sunny Alam (Auto-rickshawala)
Little Bilu has failed her exam. Furious at her failure, her mother gives an ultimatum to Bilu's father to find a tutor by the night or break the television with a hammer. Coincidentally, a mysterious man named Ronju appears at the front door claiming to be a teacher and in need of a place to stay, saving Bilu's father and his beloved television. Bilu's ever-doubtful maternal uncle arrives next morning, threatening to expose everyone's misdeed. What he finds though stuns Bilu's mother and himself. Bilu's mother, proud of her husband's kindness and daughter's success, agrees to enjoy the night on rooftop with everyone singing together. However, they couldn't find Bilu's tutor, Ronju, for the joyous celebration. He disappears in the night as mysteriously as he appeared.