Snehmoy and Miyage are pen friends who exchange wedding vows through letters. Fifteen years pass but they never meet. Yet the bond of marriage is strong between them. This unusual relationship comes under a cloud when a young widow, Sandhya, comes to stay with Snehmoy along with her eight-year-old son Poltu. Snehmoy and the little boy bond and the arithmetic teacher discovers the joy of palpable bonds and fatherhood. There develops an inexplicable thread of understanding with Sandhya too. But Snehmoy remained loyal to his unseen Japanese wife.
When a car accident lands her husband, Kaushik, in the hospital, Kaberi's life takes a dramatic turn -- in more ways than one. Anguish over Kaushik's dire condition gives way to anger when Kaberi learns he was having an affair with his co-worker. Torn between sympathy for her bedridden husband and the sting of his betrayal, Kaberi weighs her options.
Makar Kanti Chatterjee is a semi-educated self-made businessman who tries hard but often fails to communicate in English. On the other hand, his brother-in-law, Suman, gets romantically involved with a woman married to a reticent forest officer, Ashoke Sanyal. The screenplay is based on the story, Baba Hoya and Swami Hoya, by Buddhadeb Guha.
