After the events of the Battle of Equestria, Luna found herself ruling Equestria with the help of Cadance and her friends in the absence of Twilight and her sister, she later became the queen of Equestria. While many thought the war ended between Equestria and the Maleficents, Luna knew full well that his people won a great battle but unfortunately the war was far from over and that had to prepare for the continuation of the conflict.
 
For 2 years, Luna managed to stand up to the enemy despite several important lost territories like the Crystal Empire with the Crystal Mountains and the southern continent of the Basalt Sea to Macintosh Hill. During this period of conflict, while the cities are frequently attacked by the hordes of the Maleficents army, the inhabitants are evacuated in the surroundings of Canterlot or camps were created for the refugees. The army stood up to the enemy and despite the absence of some allies, Equestria won many victories but could not win back his lands being almost alone in this endless conflict.
 
Luna can no longer count on certain powers, the night princess has lost some of her immortality but can easily heal from very serious injury, even if she has kept some power, it can no longer watch over the dreams of the inhabitants of Equestria or even to change the day by the night, the day and night cycles are done automatically. Luna is a great fighter, and is often with her soldiers on the front line despite the danger and shows unflinching courage at the front, she becomes an example to all.
 
Despite the difficulties, Luna is doing everything possible to make the life of her people as simple and happy as possible even in these difficult times. But for some time she has felt a certain loneliness, that of her sister Celestia, a sensation she has not experienced since her banishment on the moon, but also of Twilight and her friends. Fortunately, Luna can count on her long-time companions, who help her make the best possible decisions despite the conflicts in the Equestrian Council.
 
But for some time now hope remains, because the seven stars where Celestia and Mane 6 were changed are shining with a thousand fires, a sign of their sign. Yet something unexpected happens for the sovereign with the arrival of visitors from Terraold accompanied by former inhabitants of Equestria, without knowing it Luna will make the acquaintance of very special ally for the princess alicorne, but who will be of great help to win the victory and find a way to free her sister and her friends.