Bijoy, son of a poor farmer from Burdwan is a good singer. He comes to Kolkata to make his fortune and meets a lissome lass Sonali, but their encounters invariably are disastrous. Then one day an accident robs Sonali of her sight. An expensive operation is the only answer and Bijoy, unknown to Sonali, arranges for the funds at great personal cost. How and when Sonali gets to know of Bijoy’s sacrifices for her is the story of “Sathi”..