Dom was not the first human in Equestria. Some unsavory characters made it there before him roughly 2000 years ago. Now, if he wants to stay alive, he has to convince everypony that humans are not the evil creatures from their history books.
The Red Cloud War saw the pegasi lose everything to the griffon hordes. Legends rose, heroes died, and through it all, Pathfinder survived. Eighty years later he must confront those painful memories. Memories of loss, of home, of the wind and stone.
Equestria has been defeated. Nightmare Moon has won, and Princess Celestia has been banished to the moon. The ponies that fought for Princess Celestia now find themselves left with a choice: swear fealty to the Princess of the Night, or die.
Clinging to Celestia's teachings of mercy and forgiveness, Twilight journeys south across the sand sea to make peace with the enemy who devastated her homeland. But every step of the way, the brother they killed is there to haunt her.
It should have been a simple raid on the ponies’ livestock, but they had prepared some kind of ambush. There had to be some reason he had been spared, and whatever that reason was, he would probably need all his strength to face it.