That show Phir Laut Aayi Naagin used to air on Dangal, but it’s a hundred times better story wise compared to the recycled seasons of Ekta Kapoor’s Naagin story wise. And the ironic thing is at least 20 percent of the villain cast was from Ekta Kapoor’s Naagin.
In that show the Naagin instead of killing herself waits for her lover to reincarnate and when he does she goes to find him. Apparently she is given a date and time and a location by some aghori baba or naag pandit and goes to look for him as per that but to her dismay there are two boys there who were born on the same day, one is the son a Rich man and the other is the son of their driver. So she gets confused between the two and has to determine who is her lover but as soon as finds out that it is the drivers son who is the reincarnation of her lover she gets caught by some snake charmers and is locked away for another 15 years by which time both the boys grow up so again she has to determine who is who. But in the process the the Rich guy’s son falls for her in an obsessive manner unaware of her identity as a naagin and then we get a love triangle where the rich guy tries to eliminate the Male lead or forcefully marry the Naagin. Later we come to know that the rich guys family was behind the murder of Nagarjun and that they are into black magic and what not etc. then comes some Naagin and we get another triangle.