A band of misfits must come together to foil corrupt Canterlot elite, war criminals, and old enemies. Meanwhile, Princess Twilight Sparkle must divert her attention between Equestria on the brink of war and a vengeful threat beyond the sea.
In the midst of a tumultuous conflict in Equestria, two soldiers, an eager-hearted pegasus and a formerly-demoted unicorn, embark on a mission to save the lives of a good few thousand ponies, and possibly even Equestria itself.