On June 24, 1947, Kenneth Arnold, a fire equipment salesman was flying his private plane on a business trip when his eye caught a flash in the morning sky. He turned to see a chain-like formation of bright, disc-shaped objects that were rapidly approaching Mt. Rainier. Arnold was an experienced and respected pilot, so it was difficult to doubt his word. Not surprisingly, no one was able to provide any. Do UFOs really exist? Noted scientist Frank B. Salisbury, in collaboration with Joseph Junior Hicks, tries to answer this question by examining UFO data in the context of modern science. In the process he interviews countless witnesses who adamantly insist they saw a flying saucer or were abducted by aliens.