The adaptation of the eponymous play by Carl Zuckmayer tells the story of renegade general Harras of the German Luftwaffe, who during WWII openly criticizes the Nazi regime. As a consequence, he is put under surveillance, and even imprisoned for a brief period of time. Still remaining outspoken, Harras realizes the horrific dimensions of this hopeless and injust war waged by Germany.

Several employees on a nobleman's estate show up at a former abbey, reputed to be haunted, to search for a hidden treasure. Howver, a mysterious hooded figure begins killing off those who may have figured out where the treasure is hidden.

A German scientist murders his fiancée during World War II when he learns that she has been selling the results of his secret research to the enemy.