First Sequel to Into the Rainbow Factory.

Ponies around Ponyville have been going missing for the past few months. No pony really thought to much of it until one in particular disappeared. It just so happen that it coincided with the ten year anniversary of the Rainbow Factory's destruction, so many thought someone had taken her to kill her. While they were not wrong, per-say, they could have never imagined who really had taken Rainbow Dash, and why.

The only pony who has a clue where Rainbow Dash is, is Princess Luna. Following that one clue she goes on a search through Ponyville to find the lost Bearer of Harmony, but what she finds is more horrifying than what anypony could have imagined.