Adam Strange intercepts the Zeta Beam at Lake Makadi, Tanganyica, Africa and returns to Rann, unknowingly carrying Jakarta, the last surviving Dust Devil, who had hidden in Adam's holster on the planet Rhynthar [see Mystery In Space #68]. It found a way to avoid being turned into glass like the rest of his race and, seeking revenge, he attacks Ranangar. The Zeta radiation wears off and returns the pair to Earth [which the dust devil also plans to conquer] near Melbourne, Australia. Adam accidentally discovers that static electricity can freeze Jakarta, traps him with a Wimshurst Machine [a machine that discharges electricity] and then turns the Dust Devil over to Australian authorities where [as revealed in Mystery In Space #84] he is immobilized and kept in a prison laboratory.; In the year 2178, Doctor Fred Gibson is on frozen Jupiter and searching for his fiance Elsa. His romantic rival, archeologist Phil Travis, finds her first but lacks the medical knowledge to treat her properly. Gibson, however, finds ancient Jovian technology that telepathically reveals its history: Jovian scientist Halfar Kal invented a "Droga Ray" that artificially evolved the Jovians into pure energy, allowing them to travel throughout the galaxy. Gibson uses the ray on himself and -- as an invisible energy being -- helps Travis save Elsa. Travis returns to Earth, but the grateful Elsa opts to stay with Gibson, her true love, who used the ray a second time to return to normal.; We are introduced to the many heroic exploits of space adventurer Jon Drum: on the planet Tantamar he defeats cloud creatues to free the Illkanov race; on a moon in the Aldebaranian system bests silicon creatures from Alphard; he escapes from a magnetic maelstorm in the constellation Bootes; and, finally, he saves a miner on Zeta Virgo's fifth planet -- where he also finds an ancient weapon. He is about to be honored with a Space Cross for Valor at the Solar Hall on Earthport Los Frisco when reporter Harl Vincent of the Space-Time Magazine claims he witnessed an android duplicate of Drum performing at least one of Drum's adventures. Drum refuses to defend himself and leaves for home in disgrace, but is captured by the warrior race, the Klinn. But its all a ruse so that Drum can penetrate the Dissimatter barrier protecting the Klinn home world, use the ancient weapon he found to defeat them and rescue several captured scientists. Exonerated, he returns to the Solar Hall for his medals.