A prince is called to action to save his people's home, a land forever scarred by the battles of ages past against the one they know as the Trickster; to the Equestrians, they know his descendant as Discord. His legacy stretches far back into time, where the first rulers of the humans first brought their own tools to bear against his nightmarish reign of old and banished him to the depths of the void, but only now are his seals truly beginning to weaken. With the second release and re-imprisonment of Discord, it sets off a series of events that threaten to swallow the humans' Renascent Empire whole and turn their legacy into another dark age. With limited options, the prince turns to their heralded saviors of the sun and moon to aid them in their quest in the hopes that they can end the threat, once and for all.