Twilight Sparkle is called away to tend to Luna when she falls ill. As Luna grows sicker and Twilight more determined to help the younger princess, she begins to uncover dark secrets about the elements, the alicorns, and her own past.
When a devastating plague rips through Equestria not even the rulers of the nation are spared. When a quirky but knowledgeable hippogriff arrives to help, Celestia is all too glad for his assistance. But for her, not all ailments are physical wounds.
Celestia finds herself sharing company and her booze stash with Luna's crazed split-personality, Nightmare-Moon. However, as the night wears on, she finds she may actually be able to tolerate the dark alicorn. Maybe even like her.
Twilight is angry. Normally, a more calm approach would be useful, but when a pony... When a pony commits THAT, well, the chips are off the table. Justice must be extracted.
A chance meeting at a ruined gala leads to opportunity. Luna longs to recover from her isolation and the shadows of her past, and she clings to the one pony whose music provides her comfort. She might not be the only benefactor in the arrangement...