In the cyberpunk Yuanxu City, there is another world hidden under the neon lights. Yun Qing, an orphan with a dual personality, had no idea what abyss he would fall into when he answered the black market phone call on the rooftop at night.
She coexists with another personality in her head, "Tao Yang", and makes deals to escape from the city by forging her identity. But the deal is a trap, and the buyer is the "Tianqiong Group" who created her. The truth of the "Gemini Project" was revealed: she and Tao Yang were artificially created symbiotic consciousnesses, and they were the company's in-vivo experiment to cultivate "perfect human beings".
In order to protect himself and save other experimental subjects who were imprisoned and transformed into "brain containers", Tao Yang led eleven awakened "kinds" out of the laboratory and fell into the huge sewer world under the city.
Caught between the rat gang, intelligence dealers and mutated creatures, she walks on the edge of morality: should she use her neural resonance ability to become a hunter, or should she stick to the bottom line and become a trapped beast?
When the company's pursuers, underground forces, and seven out-of-control "revenge machines" ignite the abyss, Yun Qing must answer: Become a "key" to open the door to a new world; or become a "weapon" to burn all injustice?
Above the neon is an artificial dream. Under the abyss, there is a real bloody battle. And she stood on the boundary between light and darkness.
