In ancient times, chaos was divided into three layers - the clear air rose to become the dome, the turbid air sank to become the abyss, and the balanced air in the middle formed the world. The three realms maintain balance with the spiritual pillar as the core. If the spiritual pillar collapses, the three realms will be unbalanced, miasma will leak out, and disaster will come.
Above the dome, Sanyuan Pavilion writes the fate of all living beings in the three realms in the Book of Destiny. Who lives, who dies, who becomes an immortal, and who becomes a demon are all recorded in the book. No one has noticed it for thousands of years - because all "resistance" itself is also a written plot.
In the mortal world, there is a sword called the Zhuotian Sword. Emperor Yuan's sword contains pure miasma. It can kill all living things and corrode the user. It has been sealed in the forbidden area behind the Cangwu Sect for thousands of years, and is guarded by three peerless experts who have spent their entire lives practicing.
Under the Abyss Realm, Emperor Yuan was imprisoned for thousands of years. His sword is in the world, and his will penetrates every corner of the world - through agents, through lies, through people's deepest fears and obsessions.