SPOILER ALERT: If you have not read JUSTICE LEAGUE 3000 #2 and do not wish to know what happens, stop reading this post now (major spoilers ahead!).
Before the newly formed Justice League can figure out what happened to their memories, the Cadmus Corporation controlling their mission sends them into the darkness of Commonwealth space. And it’s not just their memories that seem half-formed. Their powers aren’t exactly what they remember them to be, either. A Superman that can’t fly? A Green Lantern without a ring?