Why has a strong force-field appeared around the Human Realm on Avalonia? With the help of their young elf friends, the Terran Team investigate, uncovering further mysteries and finding themselves being tested with hair-raising and tricky challenges in virtual worlds. But why? Is Morwen Fay behind it? It seems unlikely as she's imprisoned in a space–time shield. And who are the Metal People? Where do they come from and what's their connection with Morwen? Things go from bad to worse as four of them are transported to a weird but wonderful alien world. Will they ever get back?
