Classicly

Tomorrow was the day of Worship at the Gray God's shrine. Beyond the city of Akal-jor was the vast valley where the Gray God was born, and where it lived on, eternally, beneath its impregnable gray metal dome, five miles in diameter, and a mile high. Shielded by half a mile of deadly radioactive field, a teeming moat of gamma rays through which no living thing could pass.

On three worlds, hopeless, futile, static beings of a dying civilization prepared for the big exodus to Mars and to the Gray God's altars. Then they would return to their dull cycle of meaningless existence to dream in some drugged escapeasy, or to die horribly in one of Consar III's atomic power plants, mine shafts, or his isotope factories.