1947. In the chaotic aftermath of World War II, American college girl Charlie St. Clair is pregnant, unmarried, and on the verge of being thrown out of her very proper family. She's also nursing a desperate hope that her beloved cousin Rose, who disappeared in Nazi-occupied France during the war, might still be alive. So when Charlie's parents banish her to Europe to have her "little problem" taken care of, Charlie breaks free and heads to London, determined to find out what happened to the cousin she loves like a sister.