Japan's cities have become enclosed and segmented, separated from one another and tightly controlled regarding tourism and immigration. AI moderators oversee each area, shaping them into an ideal society where citizens play their part in supporting the moderators' vision. However, some feel stifled by their cluster's limitations and seek to migrate to other regions. Equa, Ferres, and Martese may seem like ordinary students, yet they spend their nights as Extractors, risking everything to smuggle civilians through the city enclaves. Despite their commitment to providing clients with a new life, the risks escalate as the moderators become more aware of their activities and perceive them as a threat to their utopian worlds.