Rarity pressures the Prince of Terror into finding her a prince. But Twilight decides she needs to teach Rarity to be careful what she wishes for. But nothing goes the way anyone expects as Rarity experiences the Terror of the Blind Date.
Scootaloo's life long wish to have the power of flight is granted, but her impatience to fly before she has received any training leads quickly turns visions of glory to sheer terror.
Twilight investigates a mysterious structure on the dark side of the moon, suspecting it to be Celestia's secret library. She finds that all the books in this library are filed under T for Terror.
Concerned about her sister-in-law, Cadence, the Princess of Love, comes to Ponyville to teach Twilight how to reign in The Prince of Terror. But, she quickly finds she has grabbed a dragon by the tail.
With some prodding by Luna, Discord decides to meddle in Celestia's plans and help Twilight change her mind about the Prince of Terror. But is it too late?
Fluttershy, the new Queen of the Pegasi, negotiates with Celstia for the independence of her people. Ghidra is asked to perform a gay marriage ceremony, and is drawn into a deep philosophical discussion on the matter. And Spike tells Twilight that he will be leaving her to live with Celestia.
Discord struggles to reconcile himself with the changes in Fluttershy. Meanwhile, Scootaloo finally gets to live her life long dream of flying with her idol, Rainbow Dash. But scootaloo's new found power of flight draws more attention than she expects, as her skyward journey brings her only closer to the jaws of terror.
The day of the big wedding has finally arrived, but as Ghidra and Twilight prepare to make their vows, Sombra and Luna face off against Spike and Celestia as the war for the crystal Empire begins.
The end of the world has come... but this night could not be stopped. Ghidra and Twilight rejoice in their bond, and in their passion is the promise of the world yet to be.