In the story arc, the supervillain Universo manages to enthrall everyone of Earth, conquering the planet — leaving only four members of the Legion of Super-Heroes with any chance of defeating him.
Legion of Super-Heroes co-founder Saturn Girl — who recently resigned to spend time with her family — awakens to find herself in the barracks of a working farm on an unfamiliar planet.
Meanwhile, Mon-El, Ultra Boy and Blok accompany United Planets Ambassador Relnic on a diplomatic mission to extend the treaty with the Dominators.
On Tellus' watery homeworld Hykraius, he and teammates Wildfire, Quislet and the White Witch search for Xanthu's missing champion, Atmos.
The villain is pleased that he has taken complete control of Earth, even though he apparently killed his son Rond Vidar to ensure that his plan would succeed.
The four Legionnaires attempt to return to Earth in disguise via mass transit, but Chameleon Boy is detected, and the group is forced to steal a cruiser.
[6] After probing the mind of a Science Police officer, the Legionnaires learn that Universo managed to put Earth's populace to sleep at once, making them susceptible to suggestion.
President Desai blamed the phenomenon on an alien sleeping plague and began instituting changes that eventually resulted in the Legion's disbanding and the isolation of Earth.
After consulting Former President Marte Allon (Colossal Boy's mother), Saturn Girl correctly determines that Universo has been posing as Vid-Gupta.