Ratan sees a courtesan on the roads of Kolkata and identifies her to be Sona, his long lost childhood lover who was kidnapped from the ghats of Benaras and could never be found again. He goes over to her place and finds out that she was indeed, Sona. However after being kidnapped her life had changed. She was forced into a life which she never wanted. Ratan urges her to come along with him, and after much dilemma, she gives in. They get married and move to a different place and start life afresh...