A world ravaged by a monstrous ancient evil must seek aid from a hidden city to survive. Three millennia after the Dark nearly annihilated humanity, the creatures have returned, driven by an insatiable bloodlust. The last remnants of civilization huddle within the fortress Keep of Renweth, their hope dwindling even with the aid of the wizard Ingold Inglorion. To combat this encroaching horror, they must reach the legendary Hidden City of Quo, where all other wizards have been summoned. However, Ingold's magic cannot penetrate the illusory barriers surrounding Quo, forcing him and his student, Rudy Solis, to embark on a perilous two-thousand-mile trek across a dangerous desert to find the City of Wizards and whatever fate awaits them there.

The premise sets up a classic epic fantasy narrative with elements of post-apocalyptic science fiction. The struggle against an ancient, overwhelming evil and the quest for a hidden source of aid suggest a story focused on survival, magic, and the resilience of humanity. The journey across a dangerous landscape implies a narrative that will test the protagonists' resolve and resourcefulness. The inclusion of a wizard and a hidden city points towards a world rich in magical lore and potentially complex political or social structures within Quo. The story appears designed to explore themes of hope against despair and the necessity of cooperation in the face of annihilation.