The guys make an exciting discovery when they find the remnants of a German plate. A conversation with diving expert Bill Palmer leads them to believe it is from a U-Boat. During the Second World War, the Nazis looted everything they could get their hands on, including an estimated 600 tonnes of gold, thousands of pieces of artwork, and millions of priceless artefacts. While some of these items have been found, much of it remains missing. Treasure hunter Darrell Miklos believes some of these stolen riches were loaded into specially modified U-Boats that are currently lying at the bottom of the Caribbean Sea. His evidence: two top-secret documents acquired over 40 years of research. Using these documents as his guide, Darrell and his team of divers and researchers are setting out to find these lost U-Boats and answer questions decades in the making.