Set in the year of 1993, the story begins with a newly wedded couple, Suhaasini and Mahendar going to a Ram temple at Raamnaamgarh to hand over Suhaasini's wedding chain to the idol of Lord Rama and receive the deity's blessings. The train stops at the train station and Mahendar's loyal driver Birju comes to fetch them and to drive them till the temple. Not realising that Birju is possessed, they follow him. Suhaasini and Mahendar enter the temple when suddenly, Mahendar recalls that they have forgotten the wedding Chain in the car so Mahendar goes to fetch it, asking Suhaasini to stay here. Suhaasini wanted to go with him as the temple seemed to be scary and also because it was the New Moon night. But Mahendar convinces her to wait for him to come. Meanwhile, Suhaasini witnesses strange eerie occurrences in the temple premises while exploring the region which included absence of a bell as well as any idol of Lord Rama inside the temple and passing of a cat out of nowhere. As soon as Suhaasini goes further inside the temple she trips off a door and falls down the stairs that lead into the temple's basement that happens to be a taantrik named Kaalasur's lair. As soon as Kaalasur sees her, he gladly welcomes her inside and offers to spend the night with her and make love. This frightens Suhaasini and she yells for help. This is followed by a struggle by Suhaasini to escape the taantrik's clutches and a duel between him and her husband Mahendar. Suhaasini runs away screaming for help. While fighting with the taantrik, Mahendar loses consciousness and Kaalasur shape-shifts into Mahendar's form. Meanwhile, Suhaasini reaches the palace of Thakur Prithvi Singh Sooryavanshi and asks them to save her husband from Kaalasur. Just then, Kaalasur arrives there in Mahendar's disguise and Suhaasini, scared out of her wits, pleads everybody to get the taantrik at the temple arrested. As everyone goes in search of the taantrik, Kaalasur takes Suhaasini in a bedroom inside the palace and tries making love to her. But luckily Suhaasini sees the reflection of the taantrik in the glass ceiling and pushes him away. As she reaches for the door to exit the house, the Thakur's family returns with the real Mahendar, a priest and few village men because they had found an unconscious Mahendar at the temple instead of the taantrik. The priest traps Kaalasur inside a circular ring of holy ash on the floor. The taantrik still doesn't accept defeat and continues threatening everyone. He keeps insisting on making love to Suhaasini which irks Mahendar to no extent. He threatens to burn Kaalasur into ashes, but the latter remarks that his ashes would rise in air and coalesce to resurrect him. Next, Mahendar threatens to bury the taantrik alive, but he says that his skeleton would rise from underneath the ground to revive him. An enraged Mahendar then shoots the taantrik with a rifle, but the bullet falls off on hitting the latter's chest without any harm. Mahendar then strangles Kaalasur and chokes him, but Kaalasur manages to get an upper hand and lifts Mahendar up in the air grabbing his throat. Suhaasini requests Kaalasur to leave Mahendar unharmed but he pays no heed and insists on having a one-night stand with her. This invokes the ferocity and strength inside Suhaasini who lifts up a villager's axe and chops off Kaalasur's right arm that had grabbed Mahendar's throat. Next, she cuts the taantrik's head off. As a result, the beheaded taantrik curses Suhaasini's family that since he couldn't make love to Suhaasini, no woman from her family must consummate her marriage hereafter or else death would befall on her. He also remarks that Suhaasini would never know the reason why he had chosen her and wanted to make love to her. Fearing that Suhaasini would be arrested for the taantrik's beheading, MahenDar orders the village man Lakha to take care of Kaalasur and his severed arm and head. The priest then orders Lakha to lock the taantrik's arm, head and body separately and hide them in different places so that the taantrik can never assimilate his body parts together and resurrect himself.

25 years later

In Mumbai, two girls Karuna and Gauri, who are revealed to be sisters, are shown walking to their car with several shopping bags in their hands. They reach their home and are revealed to be Mahendar and Suhaasini's daughters but Suhaasini is nowhere to be seen and instead and Karuna and Gauri's stepmother Damini is shown to be Mahendar's wife presently. Thakur Prithvi Singh Sooryavanshi is shown at Mahendar's house with his wife Uma and friend Vikram to discuss about a matrimonial alliance between his friend Vikram's son Aman and Mahendar's older daughter Karuna. While Karuna is adamant on not giving consent to marriage, her grandmother (also Mahendar's mother) is worried over the fact that Karuna would have to stay at Raamnaamgarh after the marriage. Mahendar convinces his mother and Karuna to visit Raamnaamgarh and meet the prospective groom. Meanwhile, Vikram's son Aman is shown to have returned from the United States with his friend Raajvardhan "Raaj" Singh Sooryavanshi (Prithvi and Uma's son). They invade the taxi that had been already booked by Karuna and Gauri to go to the railway station. Since Gauri asks the boys to get out of the taxi, an enraged Raaj punctures the taxi's tyres and they all have to walk all the way to the station. They all board the train, but they get off the train to buy some things at the platform. This leads to them missing the train and being forced to walk to Raamnaamgarh through the woods. In the woods, Karuna falls into a quicksand and while trying to get her out of it Gauri accidentally touches Kaalasur's severed arm that had been buried under the quicksand. This awakens the taantrik and he is now able to control his severed arm telepathically. Raaj and others then manage to rescue Karuna and take her to the old and desolate temple that used be the taantrik's lair 25 years ago. On seeing Karuna distraught and weak due to a near death experience, Gauri insists on taking her inside the temple. Her decision is strongly challenged by Raaj as he is skeptical of the temple, but Gauri breaks the holy threads wound over the gate and enters the temple's premises. Seeing this through the gem of the ring on his hand, Kaalasur directs his hand to reach for the temple door and find Birju who is revealed to have been possessed by the taantrik and locked in a room in the temple's basement since 25 years. Meanwhile, Gauri searches for help in the temple, while Raaj and Aman have left to find a way out of the woods. Gauri accidentally trips herself and falls down the stairs to the basement, exactly like the way Suhaasini had. She is startled to notice the possessed Birju who later attacks her with an axe. She struggles to save herself but is cornered by Birju. Just when he is about to kill Gauri, a man arrives and grabs his hand firmly. The two then fight while Gauri yells for help. Meanwhile, Raaj and Aman while on their way to seek help, meet Vikram along with Mahendar and his family. They enquire the two and learn that Suhaasini's daughters are left alone at the cursed temple. They all hurry back to the temple. Raaj with the help of the man who had been fighting with Birju, manages to save Gauri. The man is revealed to be Dharam, Raj's friend who's father Lakha is rendered mentally challenged due to reasons unknown to anyone. Dharam brings Birju before the villagers. The villagers demand Birju to be burnt alive. Birju is tied to a tree by the priest and just then lightning strikes the tree and it catches fire. Kaalasur who knew all the events up till now is scared for the safety of his arm which had earlier merged with Birju's arm. Suddenly Thakur Prithvi arrives with the policemen and gets Birju arrested. This infuriates Dharam who demands to know the cause of his father's mental illness from Birju. Thakur Prithvi shuts him up and reprimands him for believing in the supernatural in spite of being highly educated. He takes away Mahendar and his family to his palace with himself after dismissing the villagers.

Meanwhile the family is busy arranging the marriage of Karuna and Aman. But Gauri and Raj team up to break the alliance since Karuna and Aman are not in love with each other.

Main

• Nirbhay Wadhwa as Kaalasur Taantrik
• Karishma Tanna as Gauri Mahendar Thakur - Mahendar and Suhaasini's younger daughter and Karuna's and Abhay's younger sister. Raaj and Dharam's love interest
• Dalljiet Kaur as Karuna Mahendar Thakur - Mahendar and Suhaasini's elder daughter, Gauri and Abhay's elder sister and Aman's fiancee.
• Vivek Dahiya^[4] as Raajvardhan "Raaj" Singh Sooryavanshi - Prithvi and Uma's son, Aman's cousin brother and Dharam's best friend.
• Sumit Bhardwaj as Dharam - Raaj and Aman's best friend
• Manraj Singh as Aman Singh Sooryavanshi - Vikram and Meenakshi's son, Prithvi's nephew, Raaj's cousin brother, Dharam's best friend, Karuna's fiance

Recurring

• Manish Khanna as Thakur Prithvi Singh Sooryavanshi - Raaj's father, Mahendar's old friend, Uma's husband, Vikram's elder brother, Aman's uncle
• Papiya Sengupta as Uma Prithvi Singh Sooryavanshi - Raaj's mother, Prithvi's wife, Vikram's sister-in-law, Aman's aunt
• Abhinav Kohli as Mahendar Thakur - Suhaasini and Damini's husband, Karuna, Abhay and Gauri's father, Prithvi and Vikram's old friend
• Karan Sharma as Pandit Ved Prakash Shastri
• Sumit Verma ad Vidyut Shastri, Ved Prakash's son
• Apara Mehta as Madhuri - Mahendar's mother and Karuna, Abhay and Gauri's grandmother ^[8]
• Mehul Nissar as Vikram Singh Sooryavanshi - Prithvi's younger brother, Mahendar's friend, Raaj's uncle, Aman's father, Meenakshi's husband
• Arpit Chaudhary as Abhay, Gauri and Karuna brother
• Riddhi Dogra as Sweety
• Fenil Umrigar as Vedika
• Sheetal Maulik as Aditi
• Manasi Salvi as Savita
• Dipika Kakar^[5] as Suhaasini Mahendar Thakur - Mahendar’s first wife, Karuna, Abhay and Gauri's mother (Extended Cameo Role/Dead)

The show premiered on Star Plus on 23 June 2018 and airs Saturday-Sundays at 07:00 PM IST.^[9]

The show opened with 5.6 million impressions in it's opening week.^[10][11][12]

• List of Hindi horror shows