A group of highly qualified single men, including Dr. Richard Stanton (William Lundigan) and Dr. Jerry Lockwood (Richard Carlson), are recruited for a top secret project. They undergo a series of rigorous physical and psychological tests, during which Stanton becomes attracted to the beautiful Dr. Jane Flynn (Martha Hyer), one of the scientists testing the candidates. After most of the candidates have been eliminated from consideration, the four remaining are told about the purpose of the project.
Stanton's father, Dr. Donald Stanton (Herbert Marshall), is the man in charge. He and his colleagues are working on manned space travel. They have found, however, that even the best quality metal alloys available eventually turn brittle in the harsh environment of outer space. Since metal-based meteors are not subject to these metal fatigue stresses, the scientists want to recover samples before they enter the Earth's atmosphere to discover how the meteors' "outer shell" protects them. To accomplish this, they need to send men into space, something that has never been done before. Stanton, Lockwood, and Walter Gordon (Robert Karnes) accept the dangerous assignment, while the fourth candidate quits.
Three one-man rockets are launched a couple of hundred miles into space in order to intercept an incoming meteor swarm. Gordon makes the first run to capture a meteor; it turns out to be too large for his spaceship's nose scoop, and the ship is destroyed in the collision that follows. Lockwood suffers a mental breakdown when his view screen shows Gordon's still space-suited but now skeletal and weightless body floating toward him. Panicked and delusional, he fires his rocket engines and blasts away from Earth, heading into deep space to his doom. Stanton then misses the main swarm, but a stray meteor crosses his orbital path. He decides to pursue it, despite a warning from ground control that he may use too much fuel in the attempt and burn up upon re-entry. Stanton snags the meteor in time and manages to survive a crash landing with the now captured meteor safely intact. He is rewarded for his heroism with a kiss from Dr. Flynn.
When the meteor is examined, it is discovered to have an outer coating of crystalline pure carbon. With this discovery, the U. S. can now build safer rockets and space stations for the inevitable conquest of space.
Who was rewarded a kiss from Dr. Flynn?
Stanton