Bound for the planet Jupiter, Cadet Happy is unusually silent as he and Commander Buzz Correy approach. A criminal mastermind has the ability to become invisible. Using their own technology, our heros also work on becoming invisible themselves. Will they be able to sneak into the lair of thespace crooks? Can they hope to beat the bad guys at their own game?
Though captured, Commander Buzz Correy hasn’t given up, and manages to find a way to break free. A good old monkey wrench, and a bluff soon has the mastermind in a frenzy. Still, has he left his mass murderering ways? Will he diffuse the bomb that he has set?
Meanwhile, Cadet Happy has smuggled himself on the rocket of a henchman headed back to the planet. Soon, the bomb is located, but the countdown is on. Can the ticking bomb be stopped?