Dr. Cal Meacham, a renowned scientist, receives a mysterious package containing advanced components and instructions to build a complex machine called an interocitor. Intrigued and aided by his colleague, Joe Wilson, he constructs the device, which connects him to Exeter, a man claiming to represent a group of scientists working on advanced technologies. Accepting Exeter's invitation, Cal is transported via a pilotless aircraft to a secluded research facility where he reunites with Dr. Ruth Adams, an old acquaintance who is also involved in the project. They soon realize that the technological advancements and anomalies surrounding the facility are highly unusual and indicative of extraterrestrial involvement.

As tensions rise and suspicions grow, Cal and Ruth find themselves entangled in a broader conflict driven by alien forces with intentions linked to Earth’s potential for scientific breakthroughs. They uncover that Exeter and his associates are from a distant planet experiencing a catastrophic war. Faced with increasing danger, Cal and Ruth must navigate this complex situation with limited trust, survival instincts, and their scientific acumen, leading them through unexpected interactions and tense revelations. The stakes reach critical levels as they learn more about the alien race’s plight and technological prowess, propelling them toward an ultimate confrontation that will determine the fate of both worlds.