Brainwave Jr. crashes JSA HQ with important news, the Star-Spangled Kid officially forms Infinity Inc., and the Ultra-Humanite puts his plan in motion! "Generations" part 2.
The ultra-humanite (still trapped in limbo) reaches out to take control of the Infinitors. Sending them back to 1942 (which leads into their first appearances in A.S.S) to aid is historical self. All was done as a way for him and his fellow members of the injustice society to escape limbo.