Sworn to Secrecy examines the Sitzkrieg or "Phony War" of World War II. After Hitler's invasion of Poland, the Western Allies and Nazi Germany were technically at war. For seven months, however, neither side engaged in major military land operations.
Sworn to Secrecy examines the French Resistance. After Nazi Germany's invasion and capture of France, brave French citizens take it upon themselves to wage a guerrilla campaign against their occupiers. Eventually they play a role in assisting the Allies and help to liberate their country from the Germans.