When the Princess of another nation is threatened, she seeks aid within their neighbours of Equestria. There, she is put under the care of Twilight Sparkle. While spending time there, Twilight and the rest of the Mane 6 teach this Princess the value of herself as her own pony. All the while, the threat of war hangs over their heads.
Good so far!
Good job in explaining the culture within subjects.
So far so good.