War and Peace are two ponies raised as opposites by their mother Queen Harmonia. But when Equestria is about to be attacked for a second time by the changelings, Princess Celestia must ask Peace to bring her brother War into Equestria.
Can Peace tolerate being around her brother long enough to help Equestria remain under Princess Celestia's rule, and will the two of them be able to defeat the impending Changeling attack?