Rarity's life had been shaken up quite a few times- after all, she'd never expected the legend of the Mare in the Moon to be true, much less did she ever expect Nightmare Moon to return to crown herself the new Princess of Equestria, and never in her wildest dreams would she have become the Princess' private secretary. Yet, in a few short years- all of these unlikelihoods and more would come to be.

Just when she thought her life would have no more twists and turns, the Lunar Palace receives a visit from a mysterious alicorn who claims to be a Princess from another world- trying to fix a timeline broken by a vengeful wizard called Starlight- and even though the strange mare left just as quickly as she appeared, the impact on Rarity would be lifelong, as she sets off to right an otherworldly wrong.