It is a masterpiece and quite different from Saratchandra's other novels. Here is a gist of the plot without giving the story away; because one should definitely read the novel in Saratchandra's words... the dialogue deliveries and the character sketches are remarkable, and in spite of the story being set in pre-independence days, has an incredible amount of relevance to today's society.
... The story revolves around a set of prabasi Bengalis in Agra, when a wealthy elderly widower Ashubabu moves into the city with his only daughter Manorama. In spite of being very rich, Ashubabu gains instant popularity amidst the Bengali community because of his extremely down-to-earth/sociable/helpful demeanor. Ashubabu frequently visits other families, and invites people to his home (a huge house) for meals, music gatherings, and adda. Shibnath is an excellent musician, but a very lose character person, who Ashubabu meets with and starts inviting to his home regularly because of his excellent musical talent. One evening, at a dinner with several others and Shibnath at his home, it gets revealed that Shibnath had left his first wife because of her persistent ill health and had married a daughter of a Dasi in his house. Shibnath gets unpopular and loses respect in the community but still maintains his demand due to his music and his charming an open personality. The appearance in the story of this stunningly beautiful second wife of Shibnath, called Kamal, arouses a tremendous surge of a mixture of rage, respect, and curiosity in the Bengali community. Kamal was brought up in a tea bagan in north bengal and was born to a European man and a Hindu dasi. Kamal is a very strong character and is not influenced a bit by insult and societal negligence due to her caste and her beliefs. In spite of being an outcast, (and later in the story been dumped by Shibnath), she continues to influence the community by her fearless philosophy that revolves around the betterment of humanity as a whole, and not clinging to the age-old Hindu traditions to be the saviors of our souls. The remainder of the story revolves around Kaml, Ashubabu (who immensely likes Kamal and almost sees her as his daughter, but doesn't agree on a single thing with her ever), Ashubabu's foreign-return (supposedly) hobu Jamai Ajit, Manorama, and a few other very interesting, albeit different characters ...