A gentle girl born and brought up amidst the ever growing eco-social-consumeristic environment finds it difficult to fit in the society. She decides to take it hard on the people. What she does is the rest of the story.
The story follows a recent divorcee who spends her daily commute fantasizing about a seemingly perfect couple who live in a house that her train passes daily, but something shocking happens there one day.
Kaaliyan has a sister who marries a young man without the permission from Kaaliyan and moves to Kolkata with her husband , where she faces unknown threats. Soon her brother Kaaliyan comes to the rescue.