Waking from a nightmare with no memory of what happened, Apple Bloom is shocked. She has become an Alicorn! To find what has befallen her, she seeks advice of Princess Celestia. But the royal sisters have vanished, unfurling a real nightmare!
When learning that Twilight won’t be able to spend Hearth’s Warming with her family, the Apple family plans to give the Princess of Friendship a Hearth’s Warming she will never forget.