Josh Gates rafts into an abandoned tunnel system to chase art and treasure stolen by the Third Reich. Then, the diary of a high-ranking SS officer leads to a search for tons of stolen gold. Later, Josh searches for a buried Nazi Enigma machine.

Josh Gates goes on a worldwide search for aviation's most famous lost plane. Just before Lindbergh made history, two rivals attempted a Paris to New York transatlantic flight. Chasing new clues, Josh scours two continents to find the lost "White Bird."