Inside a city shaded by a dome, Chip and his friends find some phosphorus atoms that are afraid of the light, as this makes them glow. Their king made them to believe that the phosphorescence is a disease, but in reality is a characteristic of phosphorus. The lie he has told them to force them to stay under the dome, is that if they go out of the dome and a potassium atom takes them, they will turn in powder to fight against Dr. No.