Strange Adventures #217

In "Secret of the Eternal City," an Earth archaeologist named Adam is suddenly whisked away by a zeta-beam to the distant planet Rann, where he meets the enigmatic Alanna and the brilliant Sardath. When alien invaders known as The Eternals threaten Rann, Adam and Alanna embark on a perilous journey to the hidden, Brigadoon-like city of Samakand in search of a mysterious life-metal called vitatron. With cunning and courage, Adam outwits the invaders, trapping them in Samakand before vanishing back to Earth—only to wait, ever hopeful, for the next zeta-beam.

In the ashes of a world ravaged by nuclear war, ex-soldier Gardner Grayle stumbles upon a town ruled by the tyrannical Black Baron, who hoards food and enslaves the survivors. When Grayle is forced to confront the Baron’s enforcers, he discovers that an ancient suit of armor in the local museum can protect him from the Baron’s deadly radiation weapons.