The planet Arzor is torn between the indigenous Norbies, red-yellow, horned creatures, and the "off-worlder" human exiles from Terra, the planet that was reduced to a blue, radioactive cinder in a galaxy-wide holocaust. The plot is simply that the superstitious Norbies are being duped by an insane off-worlder to attack the peace-loving off-world inhabitants of Arzor. The story of Hosteen Storm's discovery of the situation and his eventual solution of the problem is secondary to the fascinating description, the imaginative ideas, and the general quality of prose and dialogue. For the experienced science-fiction reader.