World War II pilot Peter Marshall leads the most successful bombing crew at his airbase, having survived an unusual number of extremely dangerous missions over Germany. However, when Peter falls hopelessly in love with an attractive WAAF officerone who insists that wartime duties should take precedence over emotionshis concentration begins to suffer. Soon it looks as though his perfect run of successful missions may be at riskalong with the lives of Peter and his menunless she can be persuaded to relent.