Crossovers of My Little Pony: Friendship is Magic and Once Upon a time. Looks like Queen Regina had the same spell on Equestria and at Canterlot High. It's possibly up to the Mane Six, Spike, the Cutie Mark Crusaders, Sunset Shimmer, Cadance, Shining Armor, and Emma Swan to break the spell, and free all of the Equestrians and the various fairy-tale characters who were transported to the real world and robbed of their original memories by a powerful curse.