 After Aranyer , Ray addressed contemporary Bengali life . He completed what became known as the Calcutta trilogy : Pratidwandi ( 1970 ) , <unk> ( 1971 ) , and Jana Aranya ( 1975 ) , three films that were conceived separately but had thematic connections . Pratidwandi ( The Adversary ) is about an idealist young graduate ; if disillusioned at the end of film , he is still uncorrupted . Jana Aranya ( The Middleman ) showed a young man giving in to the culture of corruption to make a living . <unk> ( Company Limited ) portrayed an already successful man giving up his morality for further gains . In the first film , Pratidwandi , Ray introduces a new , elliptical narrative style , such as scenes in negative , dream sequences , and abrupt flashbacks . In the 1970s , Ray adapted two of his popular stories as detective films . Though mainly addressed to children and young adults , both Sonar Kella ( The Golden Fortress ) and Joi Baba <unk> ( The Elephant God ) found some critical following . 
