Luna and Celestia have lived long, long lives and seen much from the time of their triumph over Discord to their reunion at the end of Nightmare Moon's banishment. From war to moments of quiet contemplation, finding one's place in the world is not always easy, even for an immortal, but each sister has sought to do so in a world full of both wonders and dangers.

And, above all, they have relied on each other.

Millennium's Eve: Celestia fears the coming of dawn
Sisters: Luna comforts Celestia
Order and Harmony: Celestia is glad she isn't like her father
Wyrmslayer: Luna gains a sword and faces a dragon

While each entry may be read as a mostly self-contained story, they all take place within one continuity and events mentioned in one may be expanded upon in another.

Cover by RizCifra; used with permission