A rumor born at the end of the Tokugawa Shogunate has driven treasure hunters for over a hundred years: that the last shogun buried a fortune in gold before the Meiji Emperor's forces could seize it. This film follows two rival families who each spent generations digging for that fortune, tracing how a wartime rumor hardened into a national obsession that outlasted the men who started it. Historians lay out the collapse of the Tokugawa Shogunate and the upheaval of the Meiji Restoration that gave the legend its plausibility, explaining why a defeated regime might plausibly have hidden its wealth rather than hand it over. The film visits the sites where excavations actually took place, weighing the physical evidence against the mythology that grew up around it. What emerges is less a treasure story than a study of obsession, following the descendants who kept digging long after any reasonable hope of success, and asking what kept them at it decade after decade.