Cambridge 1944. Bill Anderson is a restless young fighter pilot who finds himself grounded for a week. He can't wait to get back in the sky where he belongs. But fate has other plans. He strays into a stuffy college library and happens on Mary Rice a spirited bluestocking who takes his breath away. Before long the spark between them deepens into true love. But their time together can't last forever. All too soon Bill is torn from Mary's side and sent back to the battlefield. Then the unthinkable happens. Bill's plane is shot down and Bill himself is missing presumed dead. It's Mary's worst nightmare come true but she won't give up on her sweetheart now she's found him.