During World War II, Captain Cassidy and his crew of submariners are ordered into Tokyo Bay on a secret mission. They are to gather information in advance of the planned bombing of Tokyo. Along the way, the crew learn about each other as they face the enemy and some of them lose their lives.

War story of the 27th Panzers, Hitler's heavy-duty combat regiment composed of prisoners.

Frank Capra-directed propaganda film produced during World War II depicting the United States' new enemy: Japan.