In the sequel to The Lieutenant, Tempest Shadow goes back to her home town along with Twilight and Celestia. But while on their incredible journey, they come across dark forces outside of Equestria.
Twilight finds an orphaned foal and adopts it as her own, but Celestia knows that this bright young life is not long for this world. She is faced with the dilemma of what to tell her student, but even she cannot know the implications of her decision.