Faced with Twilight's coronation, Rarity must contend with what it might mean for their relationship. After all, quietly stashed away in the back of her closet are dozens of books that aren’t hers. Someday, she hopes she'll be able to give them back.
Life is like a train ride, don't you think, dearest? Destinations will change, trains will be caught and missed, but there will always be somepony willing to journey with you—so long as you let them.
When you have to turn your entire life over and start from scratch, it helps to have good friends by your side. Rara is fortunate to have one like Applejack. And the chance to meet her brother.