What happened after the Nightmare Sparkle incident? How did Twilight Sparkle recover from that? Did she have somepony with her during this difficult time?
When Discord is reformed by Fluttershy, he returns to Canterlot along with Celestia to review his marefriend. Discord realizes that although Luna is happy to see him again, she is sad about what she did in the past.
Celestia realizes that Luna is very sad after Discord's petrification. Celestia, concerned for her sister, she is determined to discover the reason for Luna's sadness.
Since Spring Rain and Glitter Drops abandoned Fizzlepop Berrytwist after going to Princess Celestia's Gifted Unicorn School, they felt sorry for leaving her, but when they find out where Fizzlepop is, they decide to go and see her to apologize.
It's a tough time to be a Wonderbolt. Funding is at risk, Cloudsdale bureaucracy is breathing down Spitfire's neck, and a new machine threatens to undo the Wonderbolts themselves. It's up to Rainbow Dash to beat it... but she'll need some help.
After Queen Novo has apologized to Twilight, Queen Novo returns to Seaquestria. Meanwhile, Fizzlepop Berrytwist decides to spend a few days with Twilight.
Luna, the ex-princess of the night decides to spend time with her marefriend before returning to be with her sister. But when Twilight asks Luna to marry her, Luna will have to choose one of the two to live with.
Nightmare Moon and Nightmare Rarity return to Earth. Nightmare Moon aims to cause eternal night and Nightmare Rarity as well, but she also intends to try again to conquer Nightmare Moon. Will she succeed in winning Nightmare Moon's heart this time?
Princess Celestia understands that being an Element of Harmony is dangerous, and that Twilight and her friends are bound to make enemies. So, naturally, the only course of action is to send a guard to keep them safe, even if they don't know about it.