A Tale about a young stallion trying to find the long lost Crystal Empire, but of course he encounters a range of obstacles that lead him astray or even try to stop him in his quest to find the Long lost Kingdom that used to belong to Equestria.
With the Nightmares guarding the territory in which the Kingdom once stood, and the utter lack of evidence that actually supports Starswirl's theory, he must go on an epic adventure to convince Equestria that it used to have a heart.