Tyrone Power is a pilots' pilot, but he doesn't believe in anything beyond his own abilities. He gets into trouble by flying a new fighter directly to Canada instead of to New York and letting it be towed across as the law demands, but is offered a new job ferrying bombers to war torn England. While on a layover he finds Betty Grable, an old flame, has joined the RAF as a member of the Womens Auxiliary Air Force (WAAF) in her attempt to fight for democracy. Power joins up to impress her and in the course of his several missions begins to develope an understanding of what they are fighting for.