As WWII rages on, the need to crack the German codes leads a team of American submariners to masquerade as Germans in order to infiltrate a sinking submarine and get the needed intel. Their daunting task is made more complicated with a German team on the way to help their stranded comrades.
A World War II German submarine is boarded in 1942 by disguised United States Navy submariners seeking to capture her Enigma cipher machine.