Children have been disappearing from a village of goat-herding nomads for the past X years. The superstitious locals blame it on the Gatha, a troll living in the woodlands.
That is not all. The herders are surprised by the goats’ speed of reproduction. They seem to multiply much faster than usual.
The Gatha is an old troll living in the forest. She is does make occasional night-time raids to the village to capture children, but she does not eat them. She has been charmed by a bitter witch, who has some personal grudge with the villagers.
She transforms the children into goats, which Gatha then returns back to the village.
Imagine finding out what the tasty goat, at the dinner table, is made of… This has been going on for years.
What will the PCs do when and if they find out the truth?
What will they do to poor old Gatha?