The year 2030 AD, the 1412th year of the Tang Dynasty.
Particle technology made the Tang Dynasty a leader in several technological revolutions. Its colonies spread across Europe and the New World, and the Tang emperor stood above all humanity.
Buildings pierced the clouds, flying cars raced freely across the sky, and colossal skyships blotted out the sun as they crushed every foe of the empire. Star ferries traversed the cosmos.
Space travel, artificial intelligence, and virtual reality filled the people of the Tang with countless wild dreams.
But the empire was old.
In its floating neon cities, bankers plucked stars from the tips of their towers. The remaining ninety percent of the population, starving, struggled to survive in shacks of mud and filth. Byzantium and Persia were rising, mysterious demonspawn had appeared out of nowhere, and the habitable regions of Earth were dwindling. At last, the glory of the Tang began to fade.
The warrior immortals, supposedly executed to the last, reappeared in Chang'an. Every faction in the imperial court harbored its own schemes. The Tang's fate hung by a thread, and a single misstep could send it plunging into an abyss, beyond all hope of return. The demonspawn, too, gradually revealed their true nature, and at last, humanity heard the cold voice of the cosmos...
This is an epic of madness and despair.