It is a future Equestria, long after the era of Twilight Sparkle and the stellar Princesses. Pony civilisation is dying as their lands are being stripped bare by almost unstoppable clouds of dark magic. In this time Sir Starlight travels the world with the help of the crew of the airship 'EverDream', hunting for the answer to the riddle presented to him by a white pony that haunts his dreams. But what does this have to do with the Dark? What is it that the white pony wants him to find - and what secrets of the past will they uncover?