Rarity is surprised when the newly returned Princess Luna comes in to her shop. The last time they met was when Twilight faced down Nightmare Moon. Has she come seeking revenge or does she have another reason?
Celestia is excited about her wedding to Twilight, but Luna feels left out. All of them have become consumed by the forthcoming event to the exclusion of their responsibilities. Everything is not as innocent as it seems and only Nyx can save the day.
Tirek has cursed twilight in the most cruel way. He cursed her heart. This dark curse will kill Twilight if Luna dares to get to close. Forcing Twilight to push Luna away
Celestia believes that only true love can vanquish the darkness that has begun to corrupt Luna's heart. Luna, beset by her troubled mind, is approached by a lowly earth pony who immediately falls in love with her and tries to save her from herself.