Danny Devantier is a ranger living and working on Heron Island on Australia’s Great Barrier Reef. He makes a startling life-changing discovery hidden inside a piece of rusting shipwreck on the floor of the coral lagoon…a single gold bar. Before he can unravel the mystery of his find, he must first deal with a poaching operation that can destroy the surrounding reefs in the marine park if it gets a foothold.
Jade Bryson is a young research scientist. She has devoted her career to studying the giant manta rays that, like her, are beautiful and exotic creatures that are most at home amongst the natural wonders of the Great Barrier Reef. But they are under threat.
South African-born Swiss adventurer Andre Pillans and his daughter Bettina have travelled to Heron Island to search for of a missing World War 2 tramp-steamer off the Queensland coast, hoping to uncover the secrets of a sunken treasure in gold that lies buried with the crew.
meanwhile, on the other side of the world a century-old deposit in the safety deposit box of a Swiss bank by diamond magnate Cecil Rhodes awaits its rightful heir.
As Jade moves to re-establish a relationship with her estranged father, ex-diamond-smuggler Joe Connelly, a battle rages for the conservation of an unprotected species. Loves are spawned and lost, and old scores are settled brutally against a backdrop of the splendor and majesty of the world’s greatest living reef.