The story of Sulakshana Devi, to whom principles are the biggest thing in her life. She is a widow with two sons and a daughter and lives in a chawl. The landlord of the chawl behaves badly with her and robs her of her money. Her younger son Karan tries to settle things with the landlord but is sent to the children's remand home. Sulakshan Devi moves to the city with her one son and daughter. Karan runs away from the home and reaches the city, falling prey to a life of crime.