Research scientist Jay Garrick makes a startling discovery of a new metal, thanks to the use of a new type of telescope. A group of Nazis, called the "Terrible Three", find out about Jay's discovery and succeed in stealing both the telescope and metal.; The Three Dimwits accidently convince the Nazis that they are the "Terrible Three." It's all the Flash can do to save them and capture the spies at the same time.; World explorer Marty Burke brings an odd mirror back from the Pacific area of the war, and when Winky, Blinky and Noddy learn the 4th Dimensional aspects of it, the Flash is swept into mystery right out of "Alice in Wonderland".; Learning that Marty and Joan have been captured by criminal elements, who have learned of the mirror's existence, the Flash travels from the 4th Dimension to save them and round up the crooks who have stolen the mirror.