The Everstorm had left it's mark on history once again. In the wake of the fallout, and perhaps afterwards, the worlds we know had been given a whole new era to deal with. And time, as we all know, doesn't stop for anypony, and new things can happen all the time. And in these changes, a whole new princess of Equestria, Twilight Sparkle, has now been passed as the true successor to Celestia. Not to mention too, about the big events following Steven Universe's true identity as a noble and royal member of the diamond Authority! Will this make life easier for them?
Well, every new change isn't without its catch, and new changes are also being put underway: A visit back home reveals old customs far too enforced, and new creatures are guaranteed to make things just a little bit more bothersome. You know, as always with life. It's time to test the durability of the Harmony Gems, as they stand up to the tasks ahead in loyalty, and adapting.

Harmony Gems unite!