Princess Cadence and Prince-Captain Shining Armor have given Thorax a journal to document his days in the Crystal Empire so they can help him learn from his experiences. This can only go well.
A conflict between a stallion and mare leads to the Mane Six intervening. Now, when it comes to relationships, things don't always work out well. This is no exception.
Under the light of the moon, King Thorax and Prince Pharynx come face to face with the changeling's grim past - a dark crown, and the beast that still wears it.
Thorax has taken on the role of leader of the changelings, but while Celestia promised they would leave the changeling kingdom to the changelings, the inexperienced Thorax finds he may need the help of his friends sooner than expected.
Spike has a problem regarding inviting two of his royal friends over on the same day! To avoid a diplomatic disaster, can Twilight, Starlight, and Spike prevent these two from meeting? No. No, they can’t. Let’s move on to the real problem.