This is what the lesser races of Ess'yer have done to us. This is what their kind is like. They are a disease, a taint... That's what they were seven thousand years ago when they enslaved us, that's what they were one thousand years ago when they tried to exterminate us, and that's what they are today. Their kind will never change, and our people have suffered too much that I could just let it slide. They must pay. They must pay... And I, Meliorath, Queen of dragon-kind, leader of the Dragon Hordes have sworn that I would make them pay... I will never forget what they've done. And never forgive. Mark my words... No matter what the cost, no matter what it takes, no matter what the price... I will make them pay! - Meliorath, 1 day and 10 hours after Twilightfall

Volume five of the Rider of the Black Horse pentalogy, Destiny continues the story of Brothers and concludes the pentalogy. Twilightfall has come and pushed the world of Arghard to the edge of complete annihilation. Urged by Zack Sands and Daniel Keehmor, Meliorath stepped through a Teleport Gate in order to find a magical artifact which can supposedly be used to prevent the coming end. Beyond the Teleport Gate she encounters a man whom she met only once, long ago, before he died. Now the unlikely duo must find their way back to Ighttur-wor through a path that leads them across a land crawling with monsters, the sinful capital of Delamar, a house filled with unspeakable horrors, and a city full of undead. They must do so knowing that even if they somehow make it back in time, they may not be able to prevent the inevitable cataclysm. Twilightfall had come and changed the world of Arghard forever, and now it threatens to destroy it for once and for all.