This story contains subjects not suitable for young viewers Once again, Rainbow Dash enjoyed telling a story during Nightmare Night, spooking her friends. Now, everypony hope it was the last. Yet, Luna invites herself into the celebration and decides to narrate a tale about something utterly frightening...
Something that everypony shall fear forever.

Story: https://www.fimfiction.net/story/136575/where-would-you-hide