Shining Armor and Princess Cadance had been having little trouble keeping their alicorn foal's magic under control, and they'd been fortunate enough thus far in having at least one parent always by Flurry Heart's side should the enchantment ever wear off somehow, just in case. There would soon come a time, though, when both Cadance and Shining Armor would have no other choice but to be away from the Crystal Empire at the same time. Because of this, they would need to find Princess Flurry Heart a babysitter as soon as possible.
There is only one way of determining who gets the honor of such a title, and Trixie is unlucky enough to be selected by the crystal heart itself.