After her mother's death, Jhanak is forced to marry her cousin Arshi's fiancé, Aniruddh, to escape her stalker, Tejas. Although Aniruddh and Arshi have been together for seven years, Jhanak enters their lives under distressing circumstances and begins working as a maid in the Bose household. While some family members treat her kindly, others constantly insult and belittle her. Despite Arshi's presence, Jhanak and Aniruddh grow close and become intimate when he is intoxicated during a trip to Kashmir.
Their secret marriage is later exposed, causing major tension within the family. Though humiliated, Arshi decides to stay. Jhanak moves to Mumbai to pursue her dream of becoming a dancer and later returns, claiming to be pregnant with Aniruddh's child. However, it is later revealed to be a tumour. Aniruddh suffers a heart attack, and Jhanak is presumed dead after being targeted by Srishti and Tejas. She is rescued by Kulbhushan, Brijbhushan's lookalike, and soon learns that Brijbhushan is her biological father. Kulbhushan, with the help of Srishti and Urvashi, had stolen Brijbhushan's identity. Determined to expose them, Jhanak returns disguised as Nutan. During an anniversary celebration, their truth is revealed. Kulbhushan murders Brijbhushan, and Aniruddh, still in love with Jhanak, falsely claims to have cancer to marry her. Upon discovering the truth, a heartbroken Jhanak leaves for Mumbai with Aditya Kapoor.
Kulbhushan's men later kidnap Jhanak, but she manages to escape. Meanwhile, property disputes erupt in the Bose family, and Jhanak ends up in Gujarat disguised as Vihaan's late wife, Avni. She is shocked to discover that Aniruddh is Vihaan's close friend. At a family wedding, Arshi exposes Jhanak's true identity. A marriage is arranged between Jhanak and Vihaan, but she flees before the ceremony.
Jhanak is captured again by Kulbhushan's men but is saved by an elderly couple. She ends up in a red-light area and escapes to a police station, where Choton finds her and brings her back to the Bose house, shocking everyone. During Arshi's baby shower, Srishti publicly apologises and claims to be Jhanak's mother. Later, Jhanak becomes the caretaker of Arshi's baby but continues to face humiliation and abuse from the family. Jhanak eventually learns that Arshi's baby was swapped at birth. During the Holi festival, she exposes the truth and begins searching for the real child. Meanwhile, Laal divorces Bipasha after her father, Sarveshwar, reappears. Bipasha conspires with him to send Jhanak to Banaras.
Jhanak tracks down the man responsible for stealing Arshi's baby and attempts to expose him. Meanwhile, Mimi and Anirban plan their wedding, and a false case is filed against Jhanak. She is arrested, but Aniruddh and Mimi testify in her defence, revealing the constant mental abuse she endured in the Bose household. Inspector Sanjay Sarkar uncovers that several police officers helped Shubho, Tanuja, and Arshi frame Jhanak by suppressing evidence. The judge ultimately dismisses the case due to lack of evidence and clears Jhanak of all charges. Shubho, Tanuja, and Arshi are left humiliated as the truth comes to light, and justice finally prevails for Jhanak.
Later, Arshi meets Siddharth Chatterjee and quickly falls in love with him, while Aniruddh leaves the Bose house to live in a live-in relationship with Jhanak. When Aniruddh learns of Arshi's growing closeness with Siddharth, he insists that Arshi divorce him so that he can marry Jhanak and she can be with Siddharth. The divorce proceedings nearly reach completion, but Siddharth betrays Arshi and elopes with his girlfriend, leaving her devastated. Aniruddh and Jhanak return to the Bose house and begin their wedding preparations. However, on the wedding day, Arshi returns and refuses to grant the divorce. Heartbroken, Jhanak runs away and, on her journey, finds Arshi and Aniruddh's kidnapped daughter, Aditi, affectionately nicknamed "Moon". She rescues her, boards a bus, and meets Parashar, who saves them both from Kulbhushan's goons and takes them to Shimulbuni. Over time, Jhanak and Parashar grow close as he supports her and helps raise Moon as his own daughter.
Although Aniruddh and Arshi remain married, their relationship turns cold and distant. Aniruddh continues to live in the memories of Jhanak, while in Shimulbuni, Parashar becomes a father figure to Moon, and Jhanak raises her as her own child. Unaware of Jhanak's presence in Shimulbuni, Aniruddh arrives there for an office project. The two reunite and share an intimate moment. The next day, Aniruddh hears rumours that Jhanak is Parashar's wife and feels deeply betrayed. Jhanak then reveals the truth—that Moon is actually Aniruddh and Arshi's biological daughter.
Wanting the best for Moon, Jhanak sends her away with Aniruddh to Kolkata despite her heartbreak. Soon after, Jhanak is poisoned in the village and rushed to the hospital by Parashar and the villagers. Aniruddh arrives, learns that Jhanak and Parashar were never married, and decides to marry Jhanak in the village. Parashar, secretly in love with Jhanak, is heartbroken but hides his pain and supports their union.
Aniruddh and Jhanak eventually marry, and Jhanak later reveals that she is pregnant with his child. However, Aniruddh refuses to believe her and accuses Parashar of being the father. Devastated by his mistrust and accusations, Jhanak severs all ties with him, realizing that, Aniruddh is unworthy of her love. The two part ways forever.
