Mamta lives a poor life-style along with her husband, Dinu, and two sons, Mohan, and Sohan. When Ram Lal, the rich Zamindar, Kanta Prasad Gupta's Munim, involves them to take Sohan to Mrs. Sharda Gupta for ten days, they reluctantly allow him to take action. After 10 days, Gupta himself approaches them and begs them to let his spouse hold Sohan for all times. They tearfully agree. Then Mohan will get into hassle, and Dinu scolds him, solely to search out out that Mohan has run away from residence. A search proves futile, and the couple proceed to reside a childless life. Now 17 years later, Mamta is critically ailing, and asks Dinu to carry Sohan again. Dinu goes to the Zamindar's home the place he meets a younger man who identifies himself as the true son, Suraj, and informs him that Sohan has been requested to depart. A devastated Dinu loses his reminiscence and roams listlessly on the streets of Calcutta, unable to recollect something.