A scroll summons Trixie for a night with the Princess of Equestria. It would help Trixie though, if she knew which of the possible princesses actually sent it.

It was never supposed to end like this. Princess Cadance has saved all of Equestria from the changeling threat. What comes next isn't going to be half as easy. One wedding may be cancelled, but a new engagement has begun.

An alternate Mane Cast cross over into the normal Equestia, things go down hill from there.

Pinkamena, Fluttershy, Sparks, Rock, Applejack and the Awesome and Stupendous Rainbow Dash are back home again after their time in the other Equestria. Now to defeat Nightmare Moon and bring back the sun here too which should be simple enough, right

Lightning Dust is finally prepared to seek her vengeance on the mare she blames for denying her place amongst the Wonderbolts. Of course, it's probably only due to her romantic feelings for Rainbow Dash which she just hasn't admitted to yet.

Cheerilee has been secure in her sexuality all her life, but when she finds out that it was actually Fluttershy of all ponies that was singing with the Ponytones, everything that she was sure of is suddenly thrown into doubt.