When a normal day in Ponyville is turned on its head by news of an enemy older than time coming to destroy Equestria, Princess Twilight Sparkle and her friends are always up to the challenge, but when they are ready to face this threat, an old face shows up again in Ponyville. The group must make a choice. Do they forgive an old enemy who may have turned over a new leaf, or do they push them away.

The group will have to learn a new lesson in friendship to face down an enemy that they soon discover everyone faces. Will they let go of old scars, or will they let revenge and remorse run rampant.