It might be the greatest haul of treasure ever accumulated in one place – but does it exist? This documentary examines the legend of Yamashita's Gold. Japanese imperial expansion across South East Asia during the 1930s and early 1940s saw an orgy of systematic looting across a dozen countries. Banks, government treasuries, temples and monasteries were all targeted and stripped bare. The spoils were intended to be shipped back to Japan, but this was effectively rendered impossible after 1942 as American naval superiority came to dominate the Pacific.