Structural engineer Lin Shen was struck by a strange blue light while surveying an unfinished building. After waking up, he could sense the color and taste of other people's emotions - despair is the bitterness of grey-green, and love is the sweet fragrance of warm orange. This is not an illusion, but the product of the "White Noise Project", a terrifying system that attempts to control humans through emotional frequencies.
At the same time, emergency doctor Shen Moning has been investigating the mystery of her father's disappearance for five years. She has long been able to see the colors of emotions, but she has never been able to decipher the "resonance frequency" clues left by her father. An accident caused the two to meet, and they discovered that they were both "synaesthetes" selected by the device. The disappearance of Shen's father and the frequent strange incidents in the city all pointed to the mysterious organization hidden in the dark side of the city.
The addition of illustrator Zhou Xiaoyu brings the key ability to calm the frequency; Chen Mo (Shen Moning's brother), who has been lurking for three years, uses his life to convey clues against the organization; Shen's mother Shen Jing's secret past reveals the ultimate conspiracy of the plan. From abandoned factories to underground laboratories, from children's experimental subjects in orphanages to the ultimate base deep in the mountains, Lin Shen and Shen Moning, with the determination to redeem themselves, fight against the darkness that controls people's hearts in the torrent of frequency.
When emotions become weapons and when frequency determines life and death, they must not only save the innocent people who have been reduced to "frequency sources", but also break their ambition to control the world. In the intertwining of trust and betrayal, sacrifice and rebirth, this game about human nature and frequency has long been destined to reverberate like an abyss.