Forensic geologist Scott Wolter chases the legend of a lost US Cavalry payroll tied to George Armstrong Custer's final campaign. The film starts with the massacre at the Little Bighorn and the rumors that followed it, including stories that Cheyenne Chief Two Moons hid a gold cache in the aftermath. Wolter examines a map supposedly buried inside a Montana monument, weighs it against known cavalry payroll records, and brings in the 2013 Saddle Ridge Hoard, a real ten million dollar coin discovery in California, as a case study in how buried fortunes actually get found. Interviews with historians and treasure researchers walk through the competing theories: gold still buried in the Black Hills, a cache moved and spent decades ago, or a legend with no gold behind it at all. The documentary treats the mystery as an open case rather than a settled answer, checking each artifact and rumor against the documentary record of the 1876 campaign before deciding what, if anything, still holds up.