Two Hours Before Wallpapers

On a high mountain by the ocean there's a small town called Amberwood, in caves of which life has been developing for many years. Its residents did not realize that in the meantime another life form, quite different from the human one, was developing just under their feet. Years went by, and the story of the cave creatures became an urban myth that local kids used to tell in order to scare their younger siblings, and only the older generation living in this town knew well that all of that was true.