Three months after the meteorite fell, an alien parasite shaped like a silver thread has quietly taken over the brain stems of 70% of the world's humans. The infected people's pupils glowed with a strange metallic blue, and they became puppets to execute the alien will. They uniformly transformed the city, captured uninfected people, and transformed human brains into "soil" that breeds a new generation of parasites.
Neuroscientist Lin Xia took the neurological laboratory data left behind by his father and retreated to an abandoned arsenal deep in the Qinling Mountains with a team of survivors led by former special soldier Chen Mo. In this base shrouded by an electromagnetic shielding net, they used modified drones to evade "puppet" patrols while dissecting captured parasite samples. Lin Xia discovered that these creatures could rewrite the host's synapses, and Chen Mo brought back a key clue during an investigation - the infected would briefly regain consciousness under specific sound waves, giving the rebels hope. When the pulse signals from the parasite mother nest begin to interfere with the base shielding network, they must use human neural codes to reversely "format" this horrific parasitic game before being hunted by millions of puppets.
