The brain of Kon Tiri, Japan's "worst criminal", is being studied by Higi Yoshowa, the "head of the department of comparative physiology at a leading university in Japan". While giving a lecture on the brain, Hiroshima is hit with an atomic bomb. Higi survives the blast, only to see it grow into a powerful Cosmic Brain with atomic energy. Higi describes this on a hospital bed to fellow scientist, Professor Brett Donaldson. Brett sees Higi Yoshowa pass away, then leaves the hospital. He watches a devastating attack by the Cosmic Brain, hiding in a shelter.