An ancient curse is awakening.
Zhou Mo bought a bronze mask in an antique shop on a rainy night and was dragged into a supernatural war spanning three thousand years. The mask is a relic of the "Phaseless Clan". The person who wears it will gain the ability to see the shadow world, but it will gradually become an inhuman thing. As strange events occurred frequently in the city - shadows separated from their bodies, newborns' skin became metallized, and electronic devices oozed black mucus - Zhou Mo discovered that he was actually a blood descendant of Lin Wujiu, the ancestor of the gatekeeper, and that the mask chose him to complete an unfinished sacrifice ceremony.
Chen Yan, leader of the Special Investigation Section, an official hero who carries the secrets of the Qinling Incident in 1994, tries to guide Zhou Mo to control the power of the mask. But the truth is far crueler than it seems: the Shadow God is not simply an evil spirit, but the corrupted form of the first Gatekeeper. Nowadays, it is spreading through the electronic network of modern society, and the only way to stop it is to make Zhou Mo a new generation of "gatekeeper", permanently sealing the passage between the two worlds - even at the cost of self-annihilation.
In this race against time, Zhou Mo must find the answer before humanity disappears:
Why did Bronze Mask choose him?
What is the truth about 1994 that Chen Yan concealed?
When the mirror no longer reflects human figures, how much reality is left in the world?
"When you stare into a mirror, what's in it is staring back at you - only it's seen more clearly."
