In the domed city of New Babel, emotions are luxuries that can be mined, refined and consumed. Ling Su, the top "emotion adjuster", is known for his calmness and precision. He can polish the most violent emotional rough stones into perfect crystallization for the upper class to enjoy.
However, when a tabooed "Crimson Mourning" crystal fell into his hands, what he attuned to was no longer pure sadness, but a memory that did not belong to any client - the desperate echo of his long-lost sister at the last moment of her life.
In order to pursue the truth, Ling Su went from being a defender of order to a fugitive being hunted by the entire city. He teamed up with the mysterious woman Night Owl who wandered on the edge of darkness, and step by step sneaked into the most unsavory bottom of the city. He discovered that the so-called "emotional crystallization" was just a gorgeous coat covering up a shocking conspiracy. Under this city that feeds on artificial happiness, countless souls are being imprisoned and drained, just to build a "perfect" world without pain.
And his sister is the core of this crazy plan.
Now, Ling Su must make a choice. Should you indulge in the last warmth left by your sister, or bury her completely with your own hands in exchange for the truth of the world? In this war built of memories and lies, his only weapons are the ones that can burn the soul - love and grief.
