After being pulled from his nearly nine-hundred year stretch of hell in the dark abyss that is the Twisting Nether to serve the new Lich King, the Archlich Kel'Thuzad was faced with the dilemma of freedom from his bindings to the Scourge. He had been an advisor and (somewhat twisted) friend to the most evil being in Azeroth's history for nearly 15 years. He had butchered and enslaved thousands, spit in and stepped on nature's face with the necromantic horrors that were created aboard Naxxramas, and was a generally annoying raid boss, all while under the cruel tyranny of Azeroth's previous Lich King, Arthas Menethil...
But, when an Equestrian Lich King is appointed by Death himself in exchange for immortality, Kel'Thuzad is in for the surprise of his unlife when he is thrown into a large room, with two comparatively small, sentient equines, who claim to be the reigning Prince and Princess of a kingdom.