Dev asks Radhika the reason that was forcing her to agree to Rohan's demands, but Radhika, who fears that Rohan may harm Dev, does not tell him anything. Rohan, who is very happy as his plan is going accordingly, tells Radhika to stop talking to Dev, but Radhika refuses to comply. Meanwhile, Maheshwari, who is busy changing Raj Purohit's medicines, is shocked when Daima suddenly arrives. Daima too is surprised to see Maheshwari there, but Maheshwari manages to make up some story and walks away. Later, while having dinner, Dev and Radhika are taken aback when Padma asks Radhika to start staying in Rohan's room.
Choti Bahu is the love saga of two soul mates Dev and Radhika.
Radhika, a Brahmin by birth, was adopted and brought up by a family of weavers in a small town called Rawal. Dev, whose family has been in the service of Rajpurohits for generations, visits Rawal as a child on the occasion of Radhashtami. Dev and Radhika meet each other and become good friends. Radhika and Dev's families tie them in the bond of marriage in their tender age.
Maheshwari (played by Pragati Mehra), the eldest bahu of the Purohits, hopes to inherit Dadaji's property. However, her plans hit a snag when Maheshwari realizes that Dadji has willed all his property is in the name of Choti Bahu.
Undeterred, Maheshwari decides to find a docile girl for Rohan (played by Apurva Agnihotri). Maheshwari plans to own the property by controlling and manipulating the Choti Bahu and to this end chooses Radhika for Rohan. Destiny brings Dev and Radhika together after 15 years, when he returns to Rawal after 15 years to find out about Radhika, Rohan's bride.
Will Dev recognize Radhika? Will Radhika marry Dev or Rohan? Will Radhika become the Choti Bahu of Purohit House?