Ponyville gets assigned a Royal Canterlot Guard, posted by Shining Armor himself. The mane six seem to take to the new addition to Ponyville well (Pinkie Pie even throwing him a party), but it soon becomes obvoius that his stay won't just be a vacation from Canterlot, as a shadow grows from the Everfree Forest. Twilight and friends, new and old, must stand up to this evil for the protection of Ponyville.