Previously... At the Maunsworth Entry-Point, the British expedition is exploring the strange world of the Heavenfield. While looking over a newly-discovered collection of buildings, they are attacked by a group of Exiles. The main security force, along with Gary Starling and Stuart Nicks, are forced to engage them in a fire-fight. But Grace and Thomas find themselves split from the group, and run further into the ruins in a desperate attempt to evade their pursuers. Meanwhile Speers' American Accelerator Array is complete. His newly-formed army enters the Heavenfield, only to discover their Entry-Point encircled by a force of Exile soldiers. Speers though, ever-more delusional, clings to his belief that it is the British who are attacking. Realising that their adversaries have access to far-superior technology, Speers orders Gutteridge to lead a covert team into the Field in a desperate attempt to capture and return with an enemy Fieldship...