Plot
An Earth archaeologist is caught by a "zeta-beam" and teleported to Rann near Alpha Centauri where he meets Alanna and Sardath. Alien invaders, called The Eternals, attack the planet while Adam and Alanna journey to the Brigadoon-like city of Samakand to locate a life-metal called "vitatron." Adam tricks the aliens so they're stuck in Samakand, but then he fades away, returning to Earth, awaiting the next zeta-beam.