Join Jack Armstrong, the All American Boy, as he begins a new adventure. Uncle Jim has summoned Betty, Jack, and Billy to meet him at his office in the airplane factory. When Betty and Billy arrive, the office is ransacked, and uncle Jim is missing. Did Jim get kidnapped? Maybe he managed to escape, or leave a clue.
While we wait for Jack Armstrong to arrive, and use his All American Boy powers, Billy and Betty take time to have a look. Radio contact is made with Jack, but will he think of any solutions. Who is that man lurking around? As fate would happen, Jack arrives a moment too late to help out.
The teens continue with sciencce facts that imply that uncle Jim may be onto a new nuclear breakthrough. The same man seen fleeing uncle Jims factory office is the same one who fled the factory. A fight breaks out, but the results only create more questions,. Jack has the upper hand, or does he?