When the world falls into a silent abyss, the "annihilation" virus deprives humans of their ability to speak and listen, and civilization becomes a pantomime on the ruins.
Ling Mo, a young scavenger who was struggling to survive, unexpectedly discovered that he could "hear" the "voice" of a mutated black cat.
This cat named "Ash" is arrogant and mysterious, and its fragmented memory fragments actually contain clues to the antidote to end this global disaster!
However, he is not the only one who covets this hope. The giant corporations that control the technology of the old era, the fortresses of survivors struggling to survive, and the crazy believers who are alienated in silence... Everyone has set their sights on this unique "messenger."
A chase and protection surrounding "the only cat that can talk" begins. Ling Mo must carry the ashes across this dead wasteland and find the lost voice for the world in the desert of human nature.