It is said that scattered across this land are seven great legendary beasts, each of them highly powerful and magical. And when one descends upon Manehattan, closely pursued by a relentless force of destruction, three ponies will find their destinies intertwined with events far greater than themselves. Follow these three unlikely heroes—brazen Warchest, steadfast Lionheart, and arrogant Speck Valorhoof—as they begin a harrowing journey across Equestria and attempt to unlock the clues that might be their only chance to defeat an impossibly twisted foe.