When the mirror in Twilight's library pulls five ponies from their world and switches them with five human girls and shuts off, it leaves Princess Twilight Sparkle in a mess. With reports of magic failing across Equestria and a great shadow growing beneath Canterlot, the girls must learn to come together in a world they are not familiar with. Can they learn to harness Equestrian Magic before it's too late or will the world fall to a great evil?