The cities broke away from the earth and exist in their world Upper. Trains are the connection between those cities, and against the background of rumble and grinding cats live their lives.
Main character Eva Warneous finds out that her family is moving because of deadly danger. But not only the lives of main characters are in danger, but also their souls. And the antique dealer Alexandra Alatus Klocvork will help solve the riddle. But important events are also happening in the Grounds. Oceanologists got hired to find constructions that caused war in the past, and may cause one in the future.

