Thirty years on from the Daleks' invasion of Earth, the scars still haven't healed. The survivors inhabit a world thrown back two hundred years, a world of crop shortages and civil unrest. A world where the brightest and best of its young people are drawn to the xenophobic Earth United group. A world sliding into a new Dark Age, believes Susan Campbell, widow of one of the heroes of the Occupation. A world in need of alien intervention. A world in need of hope.