Having saved his little sister Bina (Baby Meena Kumari) from the floods, Amar (Sheikh Mukhtar) becomes increasingly possessive about her over the years. Amar falls in love twice but forgoes marriage so he can look after the growing Bina. Bina (Nalini Jaywant), now a grown up young girl falls in love with the social activist Rajendra (Harish). However, Amar can not bear to lose Bina and so he plans her marriage to the thief Moti Kanhaiyalal, with the idea that he'll get her divorced after some time and then Bina would stay with him always. After several incidents that end up uniting Rajendra and Bina, Amar gets some happiness when a daughter is born to Bina.

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