Before Celestia and Luna brought Harmony, Discord brought chaos
Before Cadence and Shinning Armor brought love, Sombre brought fear
Before Luna let friendship into her heart, Nightmare moon created night eternal.

Luna and Celestia have led longer lives than any other pony and now their lives are laid bare. This is the story of how they grew up, how they led the rebellion against Discord and Freed Equestria, of their ascension into alicorn's and the gift of eternal life and the rivalry between sister that created Nightmare moon.

This is the story of the greatest heroes of Equestria.