War rages throughout Equestria. The return of the Crystal Empire has seen years of strife and millions dead as Princess Celestia’s forces strain against Sombra's seemingly endless hordes.

However, the entry of Freeport’s forces turn the tide in Equestria’s favor. Archon Sunset Shimmer and her army smash into the fray, breaking the long, brutal siege of Manehattan and shifting the balance in Equestria’s favor. With Sombra's army falling back to his home territories, there's finally reason to hope again.

If only they knew something far, far worse than Sombra loomed on the horizon.