Learning magic from princess Twilight herself is great, though Sweetie is having a hard time. When Twilight devises a spell to help her out, things only get worse.
Twilight Sparkle, Princess of Equestria, is still, above all else, a dedicated librarian and bibliophile. Books must be cared for. Books must be returned on time. Books must be respected.
Only a few hours after the Griffon Empire declared war on Equestria, Princess Celestia waved a white flag and asked for an audience with the Griffon Emperor. The Emperor thinks she's here to negotiate Equestria's surrender. He's wrong.
Twilight and Spike did everything together since forever. But following the events of Magical Mystery Cure, Twilight is now a princess. She grew up first. Spike realizes he needs to catch up, and so makes a choice to do the same.