During World War II, Nazi sympathizers begin a ritual using Dr. Occult to bring a being known as Koth to Earth, in order to ensure an Axis victory in the war. Hourman and several magical heroes attempt to stop them, but are unsuccessful. The spell goes wrong, however, and the Nazis release a villain known as Stalker, whose sole purpose is to end life everywhere. The magical heroes are either killed or captured by Stalker, and only Hourman and Dr. Occult escape. Hourman informs the rest of the Justice Society of America about Stalker, and the group battles with him in Washington, DC. The JSA manages to wound Stalker enough so that he must create seven disciples (the men who originally brought Stalker to earth) to carry on his work while he recuperates. The JSA splits up to batter each of the disciples. Each team is able to defeat a disciple. Dr. Occult gathers everyone together to battle Stalker in Antarctica, where Stalker is building a machine that will destroy all life on Earth. After a long fight, the machine is destroyed and Stalker is defeated.