As the dust settles on a defeated Germany after World War II, the weapons of war grind to a halt. Meanwhile, near Hamburg, three great U-boats are abandoned to their fate. And for the next 40 years, their location remains a mystery to most – that is, until three men make their way into a demolished, ruined bunker in the Elbe river.
On September 5, 1914, the British scout cruiser HMS Pathfinder was sunk off the coast of Scotland by a torpedo fired from a German submarine. It was the first time that a U-boat had successfully sunk an enemy vessel – but it would not be the last.