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: A German submarine, U-471, patrols the North Atlantic, commanded by Siegfried Lorenz, a maverick SS officer who does not believe in the war he is bound by duty and honor to fight in. U-471 receives coded instructions to collect two prisoners from Iceland and take them back to the base: a British submarine commander and a Norwegian professor. It is rumored that the professor is working on a weapon that could change the course of the war. Then Sutherland goes rogue. Shocking, brutal events occur, and disturbing things start happening on the boat-- where not all those on board are invited. A thousand feet under the waves, it doesn't matter how loud you scream.