Nyx finds herself enduring a dreamless sleep during the day, only to be active during the night. Fearing her newly awakened nocturnal habits, Nyx starts to fear for herself and wonders if it means the return of a nightmare.
Twilight is the new Princess of Equestria, and she's hosting her first Grand Galloping Gala. Celestia joins her, and Twilight asks her why she and Luna stepped down as Princesses. Celestia decides she's ready to answer.
Discord tosses Twilight and her family into an unexpected adventure while the rest of Twilight's friend get to work on the new crystal palace. All together, they'll do everything to ensure that Twilight and her family have a place to call home.
Can Nyx find acceptance with her extended family during Hearth's Warming, or will she find the holiday hymns are filled with nothing but hollow promises?