Frenchwoman Michele de la Becque, an opponent of the Nazis in German-occupied Paris, hides a downed American flyer, Pat Talbot, and attempts to get him safely out of the country.

An American goes to Germany to find his mother and discovers her in a concentration camp. With the help of an American-born widowed countess he seeks to engineer her escape.

Story of the early days of the diamond-mining era in South Africa.