At the boundary between the Star Zone and the Cosmic Zone, an Entropy Wall suddenly appeared, blocking the escape of the Level 4 Civilization team, forcing them to split and search in different directions for an opening or the origin of the Entropy Wall.
Among them, part of the Level 4 Civilization encountered an Antimatter Nebula and was directly annihilated by the Antimatter Civilization; another part, after flying along the Entropy Wall for about three hundred years, suddenly observed a massive galaxy rapidly approaching from afar.
