Away on a short leave before an upcoming moon launch, a NASA astronaut disappears and is feared kidnapped when the security services learn about his friendship with a suspected foreign female spy.

An Air Force captain inadvertently volunteers to make the first manned flight around the moon. He immediately falls under the watchful protection of various security agencies, but despite all their precautions, a young woman who may be an enemy spy succeeds in making contact with the captain. The captain eventually discovers that this woman is not an enemy but rather a friend from a very unusual source.—dinky-4