Australia's coastline holds more than 8,000 shipwrecks, and this film follows the divers and archaeologists working to find them. The search ranges from Dutch East India Company galleons wrecked centuries ago to later vessels lost to storms and reefs, with the gold rumored aboard the Madagascar and the fate of the Pandora, the ship sent to hunt down the Bounty mutineers, as two of the central cases. Divers descend on wreck sites to document hulls, cargo, and scattered artifacts, piecing together what happened from corroded anchors, ballast piles, and ship's timbers. Archaeologists cross-reference dive findings against ship's logs and colonial records to identify vessels with no surviving nameplate. The film moves site to site rather than staying with one wreck, building a picture of the risks that made this coast so lethal to shipping and the fortunes, real and rumored, that still draw treasure hunters back to the seabed.