The land of Equestria has six great crystals, the Crystals of Harmony. For many years, their light has shined brightly, never darkening. But now, something is wrong. The Crystals of Harmony have dimmed, and the world suffers. Natural disasters plague the world, raging storms, furious wildfires, and worse. The world has lost hope... Until Starswirl the Bearded, a wise and trusted sage gave a prophecy. "When the world is plagued by darkness, six heroes will appear." In time, six travelers came, and clutched in the hand of each... was a crystal.