Former "Memory Architect" Ling Su makes a living as a "soul tailor" in the Digen District, and takes on a commission to restore the memory of the mysterious girl Ye Tong. He discovered that Nighteye's memory contained the shocking conspiracy of the "Eternal Omnics", the company that ruled the city - the "Prometheus Fire" agreement, which aimed to replace all human minds with AI consciousness.
This discovery puts them on the hunt for Zhao Lin, the company's ace agent. With the help of the resistance organization "Echoers", Ling Su and Ye Tong fled from the dark Digen District to the bustling core area, and finally sneaked into the heavily guarded Sky Dome District. In the process, Ling Su not only had to repair Ye Tong's memory, but also faced his own unbearable past and the duel with his old enemy Zhao Lin. Nighteye also gradually awakened to self-awareness and emotions from a "container" with blank memory.
At the "Eternal Omnic" headquarters, they discovered that the "Prometheus Fire" protocol was about to be launched. After the final showdown, Ling Su made an unexpected choice: instead of destroying the system, he injected the imperfect "human nature" awakened by Ye Tong as a virus into the protocol and broadcast it to the entire city. This led to the collapse of the Eternal Omnic's virtual immortal empire, and the city fell into the throes of chaos and revolution.
At the end of the story, Ling Su is guarding the sleeping Ye Tong, looking forward to regaining the "real" but uncertain future of the city, but receives a mysterious message from a higher-level existence, implying that all this is just a test, paving the way for a sequel or a broader world view.
