What started off is Twilight Sparkle trying to find the difference between alicorn magic and unicorn magic. Then, it suddenly turns into the main six having their personalities switched. Who knew?
Fluttershy is no longer herself and needs convincing from her friends to return to normal. However, the more they try, the more distant she becomes, and Twilight worries that they may lose their friend forever.
A human soul is stuffed into King Sombra's body. Having no idea what's going on, and thinking he is in some kind of coma, he just casually strolls into the Crystal Empire.