Nikki, an orphan girl from Goa, marries the young, charming, and handsome Piyush. As their wedding concludes, a group of men gate crash the wedding and claim that Piyush is the prince of Bhurangarh and is needed back home. Nikki, who was unaware of Piyush having a family, questions him to which he explains that his family is very complicated. Nikki thinks nothing of it as she has longed for a family and convinces Piyush to drop their plan of a honeymoon and meet his family instead. Hesitant, Piyush agrees and they leave for Bhurangarh. Upon arrival, Nikki feels a weird and different aura around her, but is happy that Piyush's family accepts her. It is then revealed that Piyush's family worships a satanic force, Malik, to protect everyone from his wrath.
Under the pretext of traditional wedding rituals, Nikki is made to perform satanic rituals Shaitani Rasmein. When Nikki tries to escape, Piyush stops and locks her in their bedroom. When she questions him about the rituals, he does not give her a straight answer, infuriating her, but pleads with her to cooperate so that they leave sooner. Amidst all this, Nikki finds out that Piyush was married before, but his late wife, Anjali, died 3 months after their marriage.
Back in Goa, Nikki's governess, Sister Anita, is brutally killed by Kapalika, Malik's assistant and one-sided lover, using black magic, after she tries contacting Nikki, but in vain. Terrified of the rituals, Nikki refuses to perform them, but eventually gives in. Veronica, Nikki's childhood friend from Goa, arrives in Bhurangarh in search of Nikki and reveals Anita's death. Out of jealousy, Veronica decides to separate Piyush and Nikki, as she believes Piyush was meant to be with her. Her schemes fail and ends up killed by Kapalika, as a sacrifice for Malik, who also kills Aarohi's unborn child.
After witnessing Aarohi's miscarriage and Veronica's death, to protect the family, Nikki continues performing the satanic rituals, empowering Malik. After Nikki completes an engraving ritual, Malik grows more powerful and declares her the Chosen One who will be performing all 13 Shaitani Rasmein on every new moon, to regain all his body parts. This makes Kapalika jealous, as she had loved Malik for centuries. As a reward, Malik has Kapalika return Aarohi's child, while Aarohi's mother tells Nikki about Malik and how Aarohi's behavior had changed after her marriage. Kapalika tells the family members to make the Shaitani Bhog, a meal for Malik and send it with the royal maid, Rachna, as she was born in Shatbeeja Nakshatra, making her the only one who can offer the Bhog to Malik. Nikki follows Rachna as she goes to meet Malik. Kapalika ambushes a defenceless Nikki but Nikki fights her with divine energy, which she is unaware of. Rachna goes missing, due to which Malik becomes angry and punishes the villagers. Soon enough, Rachna is found and brought back by Saudamini, a researcher who wants to know more about Malik and secretly intends to become queen and rule Bhurangarh.
Nikki finds a book about Malik named Malik Puraan where Malik's stories have been written. She tries to open it but in vain, so she and Piyush visit a sage who tells them about Bhurangarh's history with Malik, meanwhile Saudamini learns of the same after opening the book. In flashbacks, it is revealed that centuries ago, Piyush's ancestor, Vishwajeet Singh Gehlot, a poor farmer, was traveling to the temple of his family deity to pray for the livelihood of his family. During his journey, he falls into a pit where he discovers hidden treasure. Kapalika arrives to tell him the treasure can only be his if he swears to worships Malik and have his wife and all generations of daughters-in-law perform the Shaitani Rasmein. Driven by greed, Vishwajeet reluctantly agrees and swears with a blood pact. Upon his return, he shares his encounter with his family, but his wife rebukes him and has him repent before their goddess. During this, Kapalika appears and states that Vishwajeet has betrayed Malik and as punishment, she kills his daughter. After this incident, Vishwajeet, along with his wife and son make a deity of Malik and replace the goddess with his statue, worshiping him.
In the present, Kapalika visits Kaalmukhi, an astrologer, and has him make Nikki's horoscope, to find out more about her. She shockingly discovers that Nikki was born with divine energy in Shatbeeja Nakshatra. Kapalika goes into Nikki's past and discovers that Baaldevi, a goddess, left Nikki in an orphanage and tells Kapalika that she will bring an end to her and Malik's atrocities. Kaalmukhi suggests that he and Kapalika inform Malik, but she kills him instead. Nikki goes to a deserted place and finds a Trident and Goddess Statue and takes it back to the palace. The next day, after formulating a plan, Nikki chants Hanuman Chalisa in the palace, through a microphone, summoning Kapalika, whom Nikki challenges. Knowing that her blood could gravely harm Kapalika, after an intense battle, Nikki stabs herself and Kapalika with the trident and dies, but Kapalika survives. Kapalika recognizes Nikki as Swarnaprabha and goes to Malik to inform him. Before revealing the truth about Nikki's identity, Kapalika is turned into stone by Malik as he found out about Kapalika killing Kaalmukhi from his loyal servant.
Upon returning back to life, thanks to Baaldevi, Nikki convinces the entire family to leave Bhurangarh, along with their subjects and servants. This plan is however, sabotaged by Saudamini, who informs Malik about the plan. In a fit of rage, Malik terrorises them, forcing Nikki to summon Chhaya, a daayan, who is later revealed to be Malik's elder sister who was captured by him. Chhaya arrives in Bhurangarh and tortures the Gehlot family and sends Nikki to steal Daakini's heart for Malik's Shaitani Rasmein which is a success. Soon enough, Chhaya discovers Nikki has a protective shield implanted by Baaldevi and forces Nikki to commit a sin, which removes the protective shield. This gives Chhaya the leverage of drinking Nikki's blood to become more powerful. Nikki formulates a plan with Sumitra and Aarohi to kill Chhaya. Nikki finds out from Baaldevi, that a good daayan can kill Chhaya. They go to Bahuon Ki Baadi where all the deceased Gehlot daughters-in-law stay after death as they have not attained salvation by Malik. They help Nikki find out about Maya Daayan, Chhaya's twin sister who was killed by Chhaya, had her soul put in a bottle and buried. Nikki, Piyush, and Sumitra arrange for a ritual to awaken Maya's soul. With Maya's soul in Nikki's body, Chhaya is finally defeated. After this, Nikki awakens back in the palace and seems to have been possessed by a witch. Later, it is revealed that she was only pretending, with Sumitra's help. Under the pretense of performing the second ritual of the 13 Shaitani Rasmein, Nikki has to bring Betal's skeleton.
Nikki joins hands with Sumitra and Piyush and finds a magical Paash which can be activated by whipping a person 100 times. Piyush volunteers to be whipped 100 times to activate the paash. Nikki finds Janjaal, a magical Betal, and defeats him. He takes her to the place where the Betal's skeleton was kept with a sword stuck on it. Nikki pulls the sword after which Betal recognizes her as Swarnaprabha and bows to her and agrees to be his servant. The entire family realizes the truth and supports Nikki's plan. On the day of the ritual, Nikki bombs the Purani Haveli to kill Malik, which fails miserably as Malik is immortal, unbeknownst to them. Livid, Malik retaliates by punishing all of them by sending Kichkandi, who possesses Nikki, and punishes the Gehlot family. Saudamini tells Malik about her wish to rule Bhurangarh after which he tells her that she should meditate to Maha Shaitan to give her soul which she does successfully. Kichkandi kills Aarohi after taking her baby before returning to the spirit realm. Nikki holds onto Kichkandi's feet and is transported with her. With the help of a sage, Piyush brings Nikki and the baby back, while Aarohi comes back to life. The baby turns out to be Shaitan's baby, who torments the family, but Nikki returns the baby to Kichkandi, where the Gehlot family learns about Nikki's connection to Baaldevi as they meet her. Malik announces Saudamini as the queen of Bhurangarh and gives her a powerful glove. During her coronation, Inspector Yashwant Sinha, arrives in the palace searching for Saudamini who is revealed to be a runaway criminal. Vikram refuses to tell him as it would be inviting Malik's wrath.
Baaldevi sends Nikki into the past with a warning not to change any event in the past as it would affect the present. Nikki hopes to find Malik's weakness and stop him from becoming immortal and meets Piyush's past incarnation, Kadam, a warrior, who was sent by Akaal Shatru alias Malik, to capture Maharani Swarnaprabha, who is Nikki's past incarnation. Nikki decides to make Swarnaprabha and Kadam fall in love, in which she succeeds and Kadam betrays Akaal Shatru. Swarnaprabha and Kadam attempt to marry, but Akaal Shatru attacks Divyanchal, kidnaps Kadam, and demands Swarnaprabha to make him immortal in return for Kadam's freedom, while Nikki tries to stop Swarnaprabha. Nikki returns to the present and vows to stop Akaal Shatru from becoming Malik.
Nikki realizes that she might lose her life killing Akaal Shatru, so she bids goodbye to her family and Piyush without informing them of her possible death. She returns to the past with Saudamini's glove and goes to Akaal Shatru's palace, posing as Swarnaprabha while the real Swarnaprabha gets the Swarnpustika and is on her way to his palace to make him immortal. Saudamini informs Malik about Nikki's journey to the past and he becomes angry. Yashwant catches Saudamini but Malik stops him and his team as he is about to kill the Gehlots, but is suddenly struck down. In the past, Nikki and Akaal Shatru kill one another, resulting in both Nikki and Malik's deaths in the present. The entire family rejoices on Malik's death and Saudamini gets arrested.
When Piyush goes to Nikki, he realizes that she has died fighting Akaal Shatru. Piyush summons Baaldevi and asks her to send him to the past to stop Nikki. Baaldevi agrees and sends him to the past. Piyush meets Nikki and tells her he knows about the future and has come to the past to stop her. They both formulate a plan to free Kadam. Swarnaprabha reaches Akaal Shatru's palace and begins the ritual of making him immortal. Kadam reaches there and Swarnaprabha stops the ritual. Nikki requests her not to make Akaal Shatru immortal by telling her about Malik's cruel terror. Swarnaprabha then decides to kill Akaal Shatru. While Swarnaprabha and Akaal Shatru are having a battle, Nikki and Piyush open the time passage. As they jump in, Akaal Shatru's soul leaves his body in a hurry, following Nikki and Piyush to the present. Malik's body gets reduced to ashes and his symbol disappears from Nikki, Sumitra, and Aarohi's hands, and the Gehlot daughters-in-law from Bahuon Ki Baadi attain salvation. Vikram declares to the subjects that Bhurangarh is free from Malik's slavery and are exhumed from performing any rituals. He declares Nikki and Piyush as his heirs and throws a party in the palace. Nikki installs Lord Ganesh's idol in the palace and Vikram announces that Nikki and Piyush will be married with proper rituals. Later, Piyush reaches the Purani Haveli, and reveals his true colors. He summons Maha Shaitan and in flashbacks, it is revealed that from Chhaya's arrival and defeat, Nikki pretending to be possessed, Kichkandi's punishment, to Baaldevi sending Nikki to the past was his entire plan. To prevent Baaldevi from helping Nikki in anyway, Malik imprisons her in the Purani Haveli.
In the guise of Piyush, Malik starts making Nikki unknowingly perform the Shaitani Rasmein once again, while strange things keep occurring in Bhurangarh and the villagers fear that Malik has returned, but Nikki refuses to believe that. Malik summons a Nazariya Chudail and Kapalika's sister, Netra, who attacks the Gehlots and turns them against Nikki. The Gehlots, especially Vikram, forces Nikki to perform Shaitani Rasmein, injuring her in the process. Malik prepares a new body vessel for himself as Piyush's body is holy, therefore rejecting Malik's evil spirit. With the help of the family priestess, Sugna Mai, Nikki hatches a plan to blind Netra, which backfires miserably as Nikki unintentionally blinds herself instead.
After agreeing to perform the next Shaitani Rasmein, Nikki soon regains her eyesight, where she has to bring Narmund Pishachini's favorite Kapaal for Malik. Dressed as a bride, Nikki goes to Pisachini's cave after defeating the evil spirits along the way. She smartly gets Mayuraditya's Kapaal and returns to Ghelot Haveli. She then finds out that Malik's soul has possessed Piyush's body. Malik plans to use the Kapaal to form a new body vessel for him and sacrifice Piyush's body. At the Puraani Haveli, Nikki finds Baldevi who informs her that Piyush's soul is in Narklok. Upon hearing this, Nikki goes on a mission to reach Narklok and save Piyush. Nikki seeks help from Mashaan Pret and drives out Akaal Shatru's soul from Piyush's body and Piyush's soul returns to his body. Mashaan Pret takes Akaal Shatru's soul to Narklok but Akaal Shatru kills Mashaan Pret instead. Netra performs a ritual in which Akaal Shatru's soul enters a new body and becomes Malik again. Malik kills Pratik as retribution and Aarohi turns against Nikki. Malik makes Nikki perform 5 new rituals so that Nikki can gain her powers and become Swarnaprabha and she would make him immortal with the help of Arth Swarn Pustika. Malik asks Nikki to bring the Jeevan Ras from Chandrabhediya. She was almost successful but the people ask the Ras to break the curse of Chandrabhediya. With no options left, Nikki agrees to give the Ras. She hears a mysterious voice coming from a cave and follows that. An old woman addresses Nikki as Swarnaprabha and tells her that Swarnaprabha has left something for her. The old lady hands over a shiny golden piece to Nikki and tells her that she is indeed Swarnaprabha.
Back in Bhurangarh, Malik performs some rituals to enhance his skills and somehow Vikram gets to know that Malik is no longer immortal. He attacks Malik but in vain. Nikki returns to the palace and tells Malik that she failed, but Malik retrieves the Ras and becomes invincible. He cuts off Vikram's arms and punishes him for betrayal. Nikki feels helpless and in anger tells that she isn't Swarnaprabha. Seeing Nikki and Piyush together, Malik brings Piyush's ex-wife Anjali back to life and makes them marry again. Malik orders Anjali to kill Piyush but Nikki, with the help of Chhalava, helps Piyush to escape to Sarpali, Sumitra's hometown. Malik erupts in anger and orders Netra to kill Piyush. Netra sets off to search Piyush. Malik orders Nikki to get him Narbhakshi's hair on account of second new Shaitani Rasmein. She gets the hair and also Narbhakshi's support. Nikki gets one more golden piece left by Swarnaprabha for her. She gives the hairs and Malik becomes more powerful. Piyush reaches Sarpali and he is welcomed by Visarpi, the Naag Godess of Sarpali. It is revealed that she was in love with Piyush's past incarnation, Kadam, but he was in love with Swarmaprabha. With Piyush alone in her refuge, she takes advantage of that and gives him poison claiming it is medicine.
As time passes, Nikki brings Shakchunni's Mothi and Daamori's Hasth to Malik, making him more demonic. Finally, Malik assigns Nikki with the fifth and final Shaitani Rasmein that is Takshak's Phan. She has retrieve it from Sarpali. Nikki goes to Sarpali and reunites with Piyush and they eventually consummate their marriage. Visarpi erupts in anger and tells Nikki that Takshak is not yet born. But Naag Guru allows Nikki to visit Gyaan Kaksh and find out about Takshak but she couldn't find anything. Piyush notices an odd tattoo on Nikki's wrist and that was the whole map of Sarpali. They reach the highest point of Sarpali and she announces her pregnancy to Piyush. They find two shining gems. Naag Guru tells them that if those two gems merge and become Maha Mani, Takshak maybe summoned. Visarpi sends a poisonous snake to attack Nikki and Piyush gets infuriated. The two gems merge and become Maha Mani and goes to Piyush. He transforms into Naagdevtha Takshak and exiles Visarpi from Sarpali. Piyush tells Nikki that Sarpali was the last spot where Swarnaprabha visited and left her with the final artifact. Piyush gives Nikki the golden artifact. Nikki keeps all five pieces together. The five artifacts merge and converts to Arth Swarn Pustika. Nikki reads the book and finds her only objective of life, to kill Malik. Nikki visits Swarnaprabha's grave and meditates. She completely emerges as Swarnaprabha and has all her powers back. Netra realizes that Malik killed Kapalika and joins hands with Nikki and Piyush. Netra rescues Vikram, Sumitra, and the remaining family members. Nikki, as Swarnaprabha and Piyush, as Takshak with their army stand ready to face Maalik, who was escorted to Sarpali by Visarpi. Malik tells Nikki who is now Swarnaprabha, that he would stop the war if she comes to his arms. Nikki denies and the war begins.
