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.

Pasqualino Frafuso, known in Naples as "Pasqualino Seven Beauties" is a petty thief who lives off of the profits of his seven sisters while claiming to protect their honor at any cost, Pasqualino is arrested for murder and later sent to fight in the army after committing sexual assault. The Germans capture him and he gets sent to a con...