Long ago, in the dead of night, Luster Dawn saw a dark figure in Canterlot Castle's throne room. Longer still before that, Princess Twilight Sparkle and her friends defeated one of Equestria's greatest enemies in that same room.
It's been a week since anyone in Sire's Hollow has seen Firelight, something that's incredibly worrisome considering recent events. Being the good neighbor that she is, Stellar Flare decides to stop by and visit.