Professor T.O. Morrow has taken over the world.
Technology from the year 2000 has appeared in the year 1941, and the Justice Society of America is on the case. They encounter a strange group of costumed people claiming to be from the year 2000 (the JLA). The JLA uses deception to try and collect the future-items and the Spectre sees the worst of the future the JLA comes from, so he imprisons them.