On the eve of galactic destruction, with the dream of a United Planets dissolving into hopelessness, only an all-out brawl between the Legion and the agents of Terror Firma can halt the coming invasion—provided a key player in the war finds within herself an unexpected power!

Brainiac 5 deals with the death of Dream Girl by placing his force field over her corpse and trying to come up with an idea that will stop the invasion by Praetor Lemnos. Meanwhile, the rest of the Legionnaires are dealing with trouble on the planets they have arrived on.