On the Longest day of the Thousandth year, Princess Luna returns. Celestia wishes to protect her vulnerable little sister at all costs so Nightmare Moon may never return. Twilight becomes suspicious of this new 'princess' after reading the legends prior to her return. Can Twilight save Celestia from the death beneath her nose? Will Celestia love Luna as she needed, but allow her room to live her life? Will Luna forgive herself for her actions? Also, who's really in danger here?