Space Guard ships wreak havoc on Krieas slave traders at Terron 3 then set all the inmates free. YARTHGO and the 'Vapor Man' HECTOR BENSUN liberate slaves and destroy the Terron prison compound. ZANDAR receives a devastating injury during the pitched battle. RUBY must use psychic healing to save his life. RATH is also wounded and faces the possibility of never being able to walk again. He becomes disheartened with war and reconsiders his enlistment in the Space Guard. While Yarthgo and his heroes patrol the skies above Thelosis, Zandar and Zale are attacked by LADY ANNE'S weather weapon. She invades Meridia, destroying landmass with corrosive slag. A Black spacecraft nearly crashes Zandar's ship as he is forced into an aerial battle against a flying ace from the Wasp fleet. Only his expertise with a Space Guard saucer can save Zandar and his Martian mate from total destruction.