The school of a remote and poor village shut down, the head master Krishna Prasanna (Chhabi) migrates to city in search of job. He moves with family, wife Labanya (Karuna), nubile daughter (Ranjana) and very young son. He takes residence with his wife's brother. He meets per chance one of his ex students, of whom he used to take free evening classes and many of whom got merit scholarship and became cream of society, a doctor, a judge, successful lawyer, manager of a big bank and so on. Can he cross the barrier and meet them? All have big bungalows and office with watchmen to stop. If he managed to meet them, will they recall his contribution and help their benefactor? If they do, what change he has to bring in himself? Can he?

Kankal is a social horror drama which shows how a spirit can fulfil its desire with its intense power. The story begins with Abhay being killed by a skeleton and police come for the inspection. Dr. Sanyal takes us back to the story where Tarala got married to Rattan, a rich man. But Tarala's sister-in-law's brother, Abhay was in love with Tarala whom Tarala didn't like for his bad attitude and lower education. So to take the revenge, Abhay married Rattan's sister. By moulding Rattan, Abhay took all his wealth and tried to rape Tarala. Though Rattan came to save her, he was being driven out by Abhay. In this situation Tarala passes away unknowingly and Abhay tried to hide her dead body by throwing it in the river. Rattan unable to find his wife became mad and roamed around in search for her.

Tripti's ill son has been admitted to the hospital. A teacher by profession, she visits her son every day after school. One day on her way, she comes across her estranged husband, Sunil Ganguly.