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. At last he came under the observation of Dr. Sanyal and they finally found Tarala's skeleton. When by co-incidence, Abhay came for his x-ray to Dr. Sanyal, Tarala took his life in the form of skeleton and thus punished him for his wickedness.