In 1870s India, Charulata is an isolated, artistically inclined woman who sees little of her busy journalist husband, Bhupati. Realizing that his wife is alienated and unhappy, he convinces his cousin, Amal, to spend time with Charulata and nourish her creative impulses. Amal is a fledgling poet himself, and he and Charulata bond over their shared love of art.
When Byomkesh Bakshi's new client, Dr. Nishanath Sen, is murdered at Golap Colony, he decides to probe into the case with the help of his close aide, Ajit.
Gandharva Kumar's arrival disrupts the festival mood of Durga Puja at Ratanlal Babu's house. He captivates the grandchildren of Ratanlal — Babu, Habul, and Tinni — with his magic tricks. Gandharva Kumar then reveals a long-forgotten secret wherein he claims to be heir to the family property of Ratanlal Babu. This creates shock in the entire family and casts gloom, resulting in dramatic incidents.
