Twilight Sparkle has made a breakthrough. Inspired by previous events, she has devised a way for ponies to travel into space... and faster than the speed of light. A test of this technology brings incredible events into fruition, for both Equestria and their entire world. But just as visitors from other worlds make their presence known, dark forces begin to move in the court of Equestria, threatening to dethrone the princesses and plunge the country into a totalitarian nightmare. The ponies, with the help of old friends and new friends, must band together to stop this threat once and for all and save their land and their people.