The wealthy, self-obsessed, and possibly crazed Manoj (Barua) is sent by his concerned family to the rural estate of his future father-in-law. Along the way, however, he gets lost and soon finds himself taking shelter in the abode of the railroad stationmaster whose beautiful, down-to-earth daughter, Meena (Kenan Devi), Manoj finds irresistible. When his haughty, progressive-minded fiancée gets wind of this, she freaks out and soon there is a showdown between the two women. In the aftermath, Manoj finds reason to go with his heart and marry Meena.
A famous radio singer Mohan (Saigal) is in love with Geeta (Leela Desai). When he goes to his friend a doctor, TB Specialist, Bijoy (Bhanu) for a check-up, he is found to be in an advance stage of TB. Meanwhile Leela's dominant mother and aunt (Nibhanani and Manorama) had been against the poor Mohan and had set their eyes on same Dr. Bijoy, the son of a family friend. When Mohan comes to know of it, and also his sickness, he decides to walk away from them. He is intercepted by a doctor who ran a sanatorium for TB patients, with some new method of treatment. Geeta couldn't forget Mohan and waited, but in the end she had to relent. Then it was known that Mohan was alive and cured. What would now Bijoy and Geeta do? There wedding was the next day, and they have to go ahead with it, the honour of both the families were at stake. Mohan too aware of his being exposed, disappears from the sanatorium and is untraceable.
A tenant attacks the villainous landlord Jawaharlal Choudhry, injures his son Priyalal and abducts his daughter-in-law Sandhya. Sandhya escapes unharmed to her relative, the engineer Praksh, but her father-in-law refuses to take her back, believing her to be 'damaged goods'. Sheltered by the kindly Promode, her husband eventually accepts her back although she feels torn between affection for her savior and her marital obligations.
This classic adultery story tells of an artist, Prasanta (Barua) presented in the stereotypically romantic image: dedicated to his vocation, paying no heed to his scandalous reputation (he paints nude models) and with a cavalier attitude to his conservative father-in-law's (Choudhury) demands for a good social behavior.
Badi Bahen aka President is a 1937 Hindi social romantic drama film (the Bengali version was called Didi and starred several different actors). The story according to the credit roll of the film is "A tale of love and greater love" developed on an idea by M. M. Begg. It was a love triangle with a social content that highlighted the conditions of the mill workers. It was also the first film to show a liberated educated woman managing her own factory