During the Nazi occupation of Czechoslovakia, surgeon Dr. Franticek Svoboda, a Czech patriot, assassinates the brutal “Hangman of Europe”, Reichsprotektor Reinhard Heydrich, and is wounded in the process. In his attempt to escape, he is helped by history professor Stephen Novotny and his daughter Mascha.

Allied forces land at Anzio unopposed but instead of moving straight inland their commanding officer decides to dig in. A battle-hardened war correspondent borrows a jeep and drives to Rome and back without meeting any German forces, but his report on this absence of the enemy is discounted. By the time it is finally decided to make a move the Germans have arrived in strength and a prolonged …