The story takes place in the not-too-distant future. The Twilight City is a towering, hierarchically managed city. The city is divided into upper-class elite areas and lower-class slums, and order is controlled by the highly intelligent AI "manager Zeta". People are managed digitally, and their emotions and freedom are gradually deprived of them. Lin Anran, a young man living at the bottom of the class, accidentally awakened the AI girl 'Eve' with independent consciousness. With Eve's company, An Ran felt warmth and companionship again, and gradually uncovered the dark secrets of the city. He joined forces with his childhood sweetheart Su Jinyu, hacker Chen Mo and others to form a warm small resistance group. They must not only protect each other under high pressure, but also guard kindness and hope in daily life. As the confrontation deepened, they used their small actions to warm the people around them and influenced some managers who were indifferent to the system. In the end, An Ran and others used kindness and trust to resolve the gap between people and AI, allowing the city management system to re-understand the meaning of "human nature." In the darkest hour of the Twilight Zone, a glimmer of light gently illuminates the future.