Ashbolt comes form one side. Illusion from the other, but both Sun and Moon cannot dwell in one sky, so the two face the unbearable separation of war between the Lunar Colony and Solar Empire.
When the pegasus Ashbolt Lumeneria is sent to the Solar Empire dungeons after her Becoming Of Age ceremony for freeing her captive father, she finds herself in his place, behind bars, threatened by the torturous Darkers and the wrath of Princess Celestia, but when a deal is made between the Prince Illusion and this Colonist prisoner, Ashbolt begins to see her way to freedom as she is forced to serve in the Imperial Palace. But as time goes on, the feeling of hatred towards her Princess Luna's enemies lessens and she finds a new emotion rising within her-and Illusion feels the same, but with the Elements of Harmony split, there is no hope for love or even a true friendship. And when their plans are torn by Celestia's demand to have Illusion become the new army Captain and to have Ashbolt executed, freedom seems impossible for both doomed ponies and their deaths loom neared with every step apart.