In pre-Partition Bengal, Kuber, a poor fisherman struggles to survive along the wild Padma River. While navigating an affair with his spirited sister-in-law, Kuber becomes entangled with Hossain, a charismatic trader recruiting desperate villagers to settle on the isolated island of Moynadeep.

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.

Sasanka grows depressed as his house and his career as a theater actor both crumble around him. When his cold-hearted, widowed sister-in-law Saraju arrives with her adorable young son Kanu, Sasanka's mood eventually changes. Kanu and Sasanka become fast friends as the youngster benefits from his uncle's wisdom and acting ability.

Mrs. Iyer and her infant son are traveling to Kolkata with the help of photographer Rajah. When religious tensions flare up and the bus travelers become stranded under martial law, she makes a choice to save him that entwines their lives.