A resourceful young boy discovers and restores an antique glass lightning maker, learns to generate and harness electricity, and uses radio techniques to build wireless apparatus. His experiments draw in local companions and produce mysterious signals and a puzzling call that launch the group into an adventurous quest. They face technical obstacles, sabotage, and severe natural hazards, mounting a perilous expedition across icy wastes that challenges their courage and ingenuity. The story blends hands-on scientific problem solving, camaraderie, and suspense as the youths apply emerging radio technology to overcome dangers and reach a daring conclusion.