Princess Celestia and Luna mysteriously fall ill and cannot wake up from their deep slumber. Twilight Sparkle can only think of one pony to help her save the Princesses, Twilight's friend and Celesita's previous student Sunset Shimmer.

Twilight Sparkle a student at the Canterlot College of Magic has summoned Rarity a creature of magic for a research paper. The contract is set to a year and a day how will these days pass with in the magical bond these two mares now share?