Luna's has enough to deal with as Princess Twilight's student. Between nightly nightmares of moon princesses and the threat of an old enemy returning from Equestria's past, Luna isn't going to be getting any sleep any time soon

This is the story of seven friends and the years that tried to keep them apart. Princess Twilight Sparkle has loved more and lost more than anypony else. At the end of everything she remembers all she learned from all the times she said goodbye.