Mohan (Sunil Dutt) is the only bachelor son of his widowed mother and works as a professor. He is against prostitution and considers prostitutes a black spot on society. But due to some circumstances, a prostitute named Champabai (Vaijyantimala) comes to his life in the form of Rajni. Will Mohan and his ailing mother accept Champabai as Rajni or not?
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