The Princesses find an alien creature barely clinging to life at the scene of a terrifying crash. Can the Combined Power of the Elements of Harmony save it, or more importantly, should they save it? Will the arrival of this strange creature tear Equestria apart?

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Everypony is invited to the celestial sisters' grand Christmas Eve party, where Luna's encounter with a mistletoe and a sudden lavender mare causes quite a few risen eyebrows.