The “Final Corridor” System spreads across the real world. After dying, everyone is forced into the “Corridor” and becomes a “Walker.” By clearing different “instances,” or anomalous events in parallel timelines, they earn “Vitality Points” that can be exchanged for a chance at resurrection or enhanced abilities. But the System is really a “consciousness prison” built by a higher-dimensional civilization. Every instance is a “thought experiment” designed by higher-dimensional beings. The Walkers’ memories and emotions are altered, and the ultimate goal is to merge human consciousness completely into the System, turning people into “calculation units without joy or sorrow.”