Twilight and Luna return to Canterlot after their honeymoon. They just didn't expect Celestia to return to live in Canterlot. As the days go by, Celestia begins to feel alone, but not alone in the sense of not having friends, or of not having Luna around, but alone of not having a partner with her during her retirement like Luna. Celestia is determined to find a love to be with her during her retirement.