Changeling hives are vanishing with no trace left behind, who, or what is hunting the changeling race? And what fate awaits Queen Twilight Sparkle and the rest of her hive?
"Dear Princess Celestia, as your (former) most faithful student, I feel I have to warn you that this is probably a trap. Chrysalis cannot possibly be serious about this. Why would anyone, much less her, want to shoot a documentary on us?"