All-Star Comics #35

The JSA begins a meeting, noting a strange metal shield with Macedonia writing that talks of a case they have forgotten. The Magic Sphere reveals how modern inventions, like airplanes, age, then suddenly disappear. The scene shifts to a hospital where a wounded Professor reveals that his invention is being used by someone, which is revealed to be his new lab assistant, Degaton. When they visit the professor, he warns they they must stop Degaton and undo what he has done. Several members go out on missions, and G.L., Johnny, and Wonder Woman remain at the hospital to protect Professor Zee.