The Fall of Canterlot sees the victory of the changelings. Having defeated their enemy, the hive looks inward, bringing torment down on Chrystalia, the traitor who fought for what she felt was right.
Twilight, accompanied by the Cores of Harmony, draws closer to her intended goal. Trixie, on the other hoof, descends further into the facility to find the scientists and answers. They will both face the past that lingers from behind them.