Meanwhile, their former companions, the blind woman Martine and the rest of the Sellars' recruits, have hiked out of the bug world to discover themselves in a simulation where the river is made not of water but air, and where the primitive inhabitants fly on wind currents and live in caves along vertical cliffs. Martine and the others name the place Aerodromia, and although they are nervous about trying it at first, they soon discover that they can fly, too. A group of natives invite them to stay in the tribal camp.

Paul Jonas has passed from the Ice Age into something much different. At first, seeing familiar London sights, he believes he has finally found his way home, but soon comes to realize that he is instead traveling through an England almost completely destroyed by Martian attack—it is, in fact, the setting of H. G. Wells' War of the Worlds. Paul now realizes that he is traveling not just to worlds separate in time and space, but to some that are actually fictitious. He meets a strange husband and wife called the Pankies, who seem to be another guise of his pursuers Finch and Mullet, but offer him no harm. (Paul is also being pursued by a special software program called the Nemesis device, but he is not yet aware of it.) Then, when Paul and the Pankies stop at Hampton Court, Paul is led into the maze by a strange man and then shoved through a gateway of glowing light at the maze's center.

On the other side Paul finds himself in the setting of Coleridge's famous poem, Xanadu, and the man who brought him there introduces himself as Nandi Paradivash. Nandi is a member of a group named The Circle, who are working against the Grail Brotherhood.