Science Comics #4

When a renowned scientist launches a daring balloon ascent into the stratosphere to study the planets from heights never before reached, his mission attracts far more attention than he bargained for—enemies of the state have plans of their own for his revolutionary telescope. As Prof. Piccardo faces sabotage and abandonment at 30 miles above Earth, the flying hero known as the Eagle must navigate enemy fire, foreign spies including the operative G-13, and his own damaged wings to mount a rescue before oxygen runs out.

Marga, the Panther Woman, arrives wounded at Ivory City, where its benevolent king nurses her back to health and shares the story of his sacred, ivory-built home. When Ashta, the king's ambitious cousin, learns that Marga once suggested the city could profit by selling its ivory, he conspires to seize power and plunder the city's wealth—and Marga realizes she must return to save her new friends from his treacherous uprising.