The day of the fifty year annual Solar Flare has finally arrived, and like all the ones before Celestia is feeling the pangs of heartache set in. But after a run in with her sister, Luna Finally gets her older sister to spill as to why this day makes her so sad, and learns of a secrete about one of Celestia's oldest and dearest friends, and about her sister herself.

Theme song for this fic: What Hurts The Most - By Cascada