The void of dreams has long been thought to be a lifeless space where Princess Luna kept watch over her subjects. Until one night she finds herself in the presence of a omnivorous stallion named Weaver, the last of his kind, with an obvious social disability and a strange grudge.

Luna wants to keep him secret until she can learn more about him and his motivations. But he shows no interest in her concerns and both enthralls and frightens her with his story and nature. She senses purest rage and hatred emanating from his soul, strong enough to be contagious. His lusts and ambitions, depravity, and ever-expanding intelligence will shape Equestria's future in a way no one could have predicted.

Even the Elements of Harmony and Discord's power of nonsensical chaos are powerless against him. For everyone knows that everything harmonizes and makes sense in a dream. This is the story of the King of Dreams.