After a revived Twilight Sparkle becomes reunited with her family and the Princesses of Equestria, the castle grounds in Canterlot shook violently. It turns out that the civil war has started to unfold before their very eyes. As Twilight and Twinklestar left Canterlot to evacuate the citizens of Ponyville, Princess Celestia wastes no time in helping the armies of Equestria defend Canterlot with all their might.