It's not easy to go back to your life after a thousand years of insanity and exile. All the same, there's a special somepony that Luna desperately wants to get closer to - all she has to do is get up the nerve to talk to her.
A strange condition has Twilight courting death in the wake of her battle with Tirek. Now her life depends on Luna, and both lives will be affected. Hopefully for the best.
Twilight Sparkle faces social ostracization when a crystal is discovered to contain the lost Princess Luna and must look past those social norms in order to learn more about this strange mare.
On behalf of her sister, Princess Luna tries to elevate the studies of her new student, Twilight Sparkle. However, when their plans backfire, they find themselves in a new world where magic is lost, and then have to survive the turmoil in its place.
Luna has been redeemed by the elements of harmony, but is finding that salvation is harder to come by. Perhaps the Moon, her prison for so very long, is truly where Luna belongs after all.
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.