Many ages ago, the great pegasus fortress of Nimbus Ring vanished. A commander-turned-legend from the ranks of the pegasi set out on an journey to find it that took her far beyond the boundaries of the known lands and into the unknown.
Fluttershy pioneers on a journey eastwards, her motives unknown to all but the residents of Ponyville. Tasked directly from the princesses, she flies onwards, past the Equestrian borders into new lands.