Foals have been disappearing from Starlight's village, and nopony knows why or where they have been taken. After one search party member returns with news of an alleged stranger and a monster in the cave where cutie marks are stored, Starlight decides to investigate. Puzzled by the strange occurrences around the place, she wanders into the tunnels of the cave system. Little did she know the caverns hide more than she thought.
vanillagosties
allowed the use of the cover
everfree helped a lot with editing and helping me form the idea for the story.
and sevenofeleven help spark my idea for it. check these awesome people out.