In New Arc City, emotion is a deadly virus that needs to be purged. Citizens are implanted with "mental stabilization plugs" and enjoy a false eternal peace in the numbness of absolute rationality.
"Zero" is a top emotional trafficker who roams the "rust area" at the bottom of the city, making a living by selling tabooed emotions. He is like a sophisticated instrument, calmly mediating the emotions of others, but he has long forgotten the temperature of his own heartbeat.
Until a mysterious woman "Liu Li" from the upper sky area found him and dragged him into a fatal whirlpool with a deal he couldn't refuse. Their goal is to find a legendary emotional chip - the "Primal Cry".
From the neon-lit sinister dark alleys to the heavily guarded EHB headquarters, a desperate chase across the entire city begins. When the dusty memories were peeled away layer by layer accompanied by severe pain, Zero discovered that what he was pursuing was not only a chip, but also the humanity that had been taken away from him, and the dark foundation of this city of light built on endless lies.
When the first real cry breaks the dead silence of New Arc City, is it the beginning of redemption or the prelude to another destruction?