In the Three Gorges region of China, a fossil trade in so-called 'dragon bones' first drew scientific attention over a century ago, and this film follows the researchers who kept digging long after. Paleontologists and archaeologists examine ancient hominid remains and stone tools pulled from the region's caves and riverbanks, some dated to over two million years old, and weigh what that would mean for the story of human origins in Asia. Interviews with excavation teams and lab specialists walk through the dating methods and the disputes over them, since claims this old, this far from East Africa, invite real skepticism from the wider field. The film treats the controversy as part of the story rather than a footnote, laying out competing interpretations of the same bones and sediment layers. It moves between field sites, museum collections, and laboratory analysis, building a picture of a region that may complicate the standard timeline of where humans came from and when they got there.