Once upon a time, Two grandparents had an infant paternal grandson, Nanga, because their only long term son and daughter in law had been murdered by a dangerously drunk Yeti in the Nepalese Terai. They didn't mind the langur monkeys, but didn't like them stealing too much food either.
Meanwhile, the same Yeti that killed the parents is out into killing off the grandparents, because of the family's screwed up relationship with Yetis like him. He then chewed, gnarled and ripped off their body parts. They then bleed intensely, later going out of control as they die of complications.
As a result, the Kotabagh village is now a ghost town, mostly inhabited by Piriram, who will have abandoned a lot of his children including Parmala, because he thinks they are not worthy successors, except for the youngest, Paura, who will have grey eyes.