Bahu Rani us a Story of a simple girl Lubna and her family, as fate has never been generous to her. She was engaged to her cousin Talal, since her childhood but step mother never wanted it to be happened. Despite of the stern opposition of Shabnam (step mother), Saadat (father) make the unison possible. Shabnam never accepted Lubna as her daughter-in-law and wants to declare her sister daughter Nuzhat as the lady of the house.Situation becomes more dreadful, when Talal has to leave Lubna alone as he departed for abroad. Now her own house has become a dungeon for Lubna as Nadir is there to spoil the life of Lubna and her sister Uzma on the directions of Shabnam. Story continues with the sufferings and adversities that Lubna and her family have to face throughout the journey of life.