In 2026, the world thrives in the hyper-scale economic era, a paradigm shift driven by Patrick Castle and his company, Nautlix. Through breakthroughs in GPSIS artificial intelligence, nuclear fusion, and terraforming, Castle has sustained a global population of 16 billion and reversed environmental collapse.

In France, the outskirts of Paris have evolved into vertical megalopolises to accommodate the new population density, while historical centers remain preserved. You live on the 68th floor of a 120-story residential tower in Saint-Denis. On a holiday, you encounter Marion, a 24-year-old former classmate who lives on the 58th floor of the same building. As you both enjoy the rooftop garden, Marion reflects on the massive urban transformation reshaping Europe and the global reliance on Nautlix technology. Surrounded by the greenery of the high-rise, you share a moment to discuss your lives and the reality of this rapidly evolving civilization.