During WWII, the United States set up army bases in Great Britain as part of the war effort. Against their proper sensibilities, many of the Brits don't much like the brash Yanks, especially when it comes to the G.I.s making advances on the lonely British girls. One relationship that develops is between married John, an Army Captain, and the aristocratic Helen, whose naval husband is away at war. Helen loves her husband, but Helen and John are looking for some comfort during the difficult times.
Mark Hunter, a lonely high school student, uses his shortwave radio to moonlight as the popular pirate DJ "Hard Harry." When his show gets blamed for a teen committing suicide, the students clash with high school faculty and the authorities.