When young Charlie Holt is chosen to take an airship to France in order to bring out a young girl and her mother, the motive for the challenge is intelligence--the girl has befriended a German officer who revealed the Germans' forthcoming military plans. Her information could save the war and millions of lives. It is agreed that in return for her intelligence, she and her invalid mother will be taken to safety. With a marine and air mechanic as accomplices, Holt sets out on his mission, but it all goes wrong when Holt confuses his directions. Out of a sense of honor and guilt, he will have to complete the mission--alone.