The setting sun drenches the Demon Realm in blood. A boy in a cold courtyard clings to life.
His fate is set: die young, see his sect destroyed, and fail to stop a calamity spanning ten thousand years.
Then time reverses by ten million years, and billions of nanorobots enter his body, overturning the board on which Heaven and Earth play their game.
Born a concubine's son, he smashes through the factional strife within the sect, takes up the Heavenly Demon Sword, and storms the forbidden grounds of the Demon God. From a good-for-nothing everyone could bully, he rises to become the Heavenly Demon Cult's leader, ruling the demonic path.
He fuses future technology with the martial arts of ages past, breaks the ironclad law of demonic transformation upon ascension, quells the Four Symbols calamities, throws time and space into chaos, and slays the world-ending fiend from the future.
There is no predestined fate in this world, only those who refuse to bow and defy their destiny.
The Heavenly Demon descends. One sword splits the firmament, defying fate and cutting through time and space!