In the early 1900s, Nikhilesh, a wealthy Westernized Hindu in colonial East Bengal, feels compelled to test the love of his wife, Bimala. He introduces her to his friend Sandip, a politician agitating against British rule, and Bimala is equally taken with both Sandip's anti-colonial fervor and the man himself. Personal and political tensions subsequently flare as the now assertive Bimala has to make a crucial decision.