Col. Greg Brandon, stationed at an American Air Force base in England, repeatedly attempts to persuade superiors that massive daylight bombing will hasten the end of World War II. In spite of the mission's extreme difficulty, his plan is finally put into effect against a German aircraft factory. During preparation for the raid, Brandon alienates his men by insisting that normal bombing operations continue. His disdain for cautious Lieutenant Archer and brash R.A.F. Wing Cmdr. Trafton Howard further antagonizes his associates, including his girl friend, WAC Lieut. Gabrielle Ames. When his plane crashes the morning of the mission, Brandon boards a bomber manned by Archer and Howard. During the effective air raid, he is impressed by Archer's courage and Howard's judgment.