While on a medical mission to India, Dr. Blake becomes Thor to repel a Chinese attack. In order to fight Thor, a Chinese scientist irradiates himself to gain great power. He fights Thor in New York, and nearly defeats him, but Thor blows him back to China, creating a nuclear explosion.; A selfish billionaire builds a fallout shelter deep beneath the Earth's surface, but when he insists on touring it alone he discovers a group of primitive humans that attack him and collapse the tunnel, trapping him.; A man cannot convince the police that he saw an alien ship land. He is really a Martian spy, making sure that they will be able to infiltrate safely.