The electronic engineer Dr. Cal Meacham is a prominent scientist that is studying industrial application of nuclear energy and also a great pilot. One day, he receives a different condenser and soon his assistant Joe Wilson receives a manual instruction and several components of a sophisticated machine. Cal and Joe build a communication apparatus and a man called Exeter contacts Cal. He tells that Cal has passed the test assembling the Interocitor and invites him to join his research. The intrigued Cal decides to travel to meet Exeter that sends an unmanned airplane to bring him to an isolated facility in Georgia.