In the floating city "Liuguang City" driven by "heart crystals", memory and emotion are not only the source of power, but also commodities that can be traded. The young tuner Lin Ji has a unique talent-he can "listen" to the remaining memories in the heart crystal. When a "hollow heart crystal" that can swallow all emotions appears, his peaceful life is completely broken.
In order to pursue the truth, he and the mysterious memory thief Su Wei were forced to go together, fleeing among the neon lights and shadows of the city. Step by step, they uncovered a terrifying conspiracy that could subvert the entire world: someone tried to erase everyone's memory and build a "perfect" world without joy or sorrow.
When the fate of the whole city hangs on a thread, Lin Ji must make a choice - continue to escape from his most painful past, or embrace the memory that can tear him apart as the only weapon against the ultimate "silence"? This is a story about protection, redemption, and rediscovering "self" in the abyss of forgetfulness.
