A 155-million-year-old Stegosaurus fossil recently shattered records when it was sold for a jaw-dropping $40 million at auction – the highest price ever paid for a fossil. A new generation of collectors is driving the prices ever higher. Yet opposition is mounting as scientists vehemently oppose the lucrative trade of fossils: irreplaceable clues to our planet’s past.

With rare access, this series digs deep into the growing and murky trade in dinosaur skeletons across the USA, Europe and Asia. We go inside an auction at Sotheby's New York, meet a wide range of fossil hunters, dealers and buyers, and join archaeologists repatriating stolen bones.

From glittering auction houses to private apartments, the film explores the larger struggle over prehistory itself: a battle in which commerce, obsession and science collide, raising urgent questions about who owns the past and what should be preserved for the future.