'Bangsher Pradeep' is the story of Choudhury family. Kali Choudhury's father was disowned his by his father and his share was given to his brother Ram Shankar. Kali and his uncle Meghnad conspire and kill Ram's son and daughter-in-law. They also kill Ram's grandson Subho after few years. A look alike of Subho arrives. Ram doesn't reveal that the new Subho is fraud for his wife Lakhsmi's well-being. It is finally revealed that Subho is actually Dipankar's son from his first wife. The evil plans of Kali and his uncle are revealed they are arrested.