Princess Luna's memories and connection to the Moon have been missing since her return to Canterlot, and every day she gets more and more guilty that she hasn't taken any responsibilities back from her overburdened sister. Surely something in Equestria can make her whole again, but who or what could it be?

[Written in June 2011, back when our mental image of Luna didn't yet include the Royal Canterlot Voice or bat pony guards.]