(Takes place right before the start of Season Three.)
What is wrong with Princess Celestia? After realizing that she and her sister will never again use the power of the Elements of Harmony, she becomes tense and distant. As she starts to be less and like her former self, it's clear that she is planning something, but no one can imagine what it could be. Princess Luna seeks help from the Mane Six, but they are as powerless as she is to prevent the inevitable....
The Cover is a vector by: http://fc05.deviantart.net and is mostly a placeholder until I find a certain other image....