My sister is an idiot. Her faithful student, Twilight Sparkle, appears to share her stupidity. Luckily, I am here to lend them a helping hoof. I can't /really/ blame them, though. They're so /adorable/ when they're clueless.
Even when there's no light at the end of the tunnel, that doesn't mean you can't keep moving. Luna finds it within herself to put one hoof in front of the other, as her immortality melts away.
Twilight is angry. Normally, a more calm approach would be useful, but when a pony... When a pony commits THAT, well, the chips are off the table. Justice must be extracted.
On behalf of her sister, Princess Luna tries to elevate the studies of her new student, Twilight Sparkle. However, when their plans backfire, they find themselves in a new world where magic is lost, and then have to survive the turmoil in its place.