A massive storm is brewing in the skies of Equestria. Strange towers seem to pop up everywhere, and Storm Creatures from the Storm King’s long disbanded army seem to come out of nowhere. The Mane Eight try to push back the onslaught, but their efforts are for naught.

But the arrival of a creature familiar to Twilight turns the tides in their favor. He somehow knows everyone, and why does it seem like he’s hiding something?