Shankar Roy lived in Nijhumgarh with his only daughter Ranu. His only wife Aparana suddenly died in an accident. Everyone became very astonished by the accident. Later police suspected Shankar as a killer of his wife, but there were no evidence against him. Mr. Chowdhury who was only guardian of Aparna became very upset by the whole incident. In such a situation Sheba, an old friend of Aparna came to Nijhumgarh. She was not only an intelligent but also very smart. She worked as a governess of Ranu. Within few days, she found something wrong in the whole situation. After a prolonged investigation, Sheba at last found the real culprit and exposed the conspiracy made by the criminals.