Twilight always knew she was going to outlive her best friends, but knowing and experiencing are two seperate matters.

Things are back to normal for Fluttershy and Discord, who are living (somewhat) peacefully in Fluttershy's little cottage.Things are about to get a little chaotic though, and Fluttershy may not be ready for it.

However long the night, the dawn will break.

Fluttershy just reformed Discord when Princesses Celestia and Luna call the Mane Six to Canterlot. She reveals that there is a darkness spreading from the south and that the Mane Six, along with Discord, may be the only ones who can stop it.