Superman leads the Phaelosians against Mongul's forces. Their first victory is defeating Teacher to rescue Manchester Black and to capture the powerful but mysterious Orphan. Before they can attempt to rescue Apollo and Enchantress, Mongul attacks and conquers a United Planets world, and makes demands against the UP to stop future attacks.
Hiding from Mongul's forces underneath Warworld, Byla-Esh tells young Phaelosians the story of the first Warzoon who gained power and became the first Mongul.