When Major Robertson and other members of the Space Patrol are abducted by Manza, an invisible being from a solar system light years from Terra, Commander Buzz Corry and Cadet Happy race to the rescue. While Manza tortures Robbie in an effort to force him to blow up Buzz and Corry, the Space Patrol officers attempt to sneak into Manza's fortress and rescue their friend before he comes to harm. Meanwhile a squadron of Icardians trying to regain their homeland hovers above the planet as they prepare to bombard Manza's fortress with deadly heat rays. Written by
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Smokin' rockets, Commander, this Manza - whoever he is or whatever it is - well, he's so scientifically advanced, I don't see how a periscope is going to help us.
Cmdr. Buzz Corry
That's just the point, Happy. Manza's whole existence is geared to a high scientific level. He'd be prepared to defeat any electronic device we might use. A periscope is not an electronic device. I'm counting on this fact to help defeat Manza. This is why I'm glad I had the security lab develop it.