As the story opens, the great Traction City of London is chasing a small town. When one city takes over another, it processes all reusable materials to create power to run the motorized wheels that enable the city to travel over the land.

London's mayor has bigger plans than the domination of a small town, plans involving the use of the weapon that laid waste to Earth millennia earlier. Several young people endeavor to stop the carnage--among them, Tom, an apprentice at the London Museum; a young woman who tries to kill the museum's head historian; the historian's daughter, Katherine; and an apprentice in the Guild of Engineers.

The pace of the violence-filled story is frenetic, the sense of helplessness is palpable, and not all the young people survive. A page-turner, this adventure in a city-eat-city world will have readers eagerly suspending disbelief to follow the twists and turns of the imaginative plot.