Neon City is a city that never goes dark. The lighting was flawless, the system was complete, and everyone was precisely arranged in their respective positions—until engineer Lin Cen was judged to be "structurally redundant" and lost his identity, qualifications, and existence record overnight. The moment he fell from the center of the city into the gray layer, he saw the huge shadow hidden behind the light: a reorganization project called the "Corona Protocol" was rewriting the rules of the entire city in a calm and silent way. It is not a mistake that determines his fate, but the "Corona Protocol" - a secret project that is rewriting the entire city.
With the help of the gray zone hacker "Gray Cat", and under the hesitant gaze of the security director Shen Ruojin, he began to reversely enter the system and write back the fate for himself and countless deleted people.
This is a confrontation between people and the system,
It is also the story of a deleted person becoming himself again.
