Neil Oliver takes to the air on an RAAF training mission to seek and destroy submarine invaders and Emma Johnston dives deep into the stunning underwater caverns of the Limestone Coast to understand their formation.
In much-loved Byron Bay, Neil Oliver unearths the town's surprisingly dirty history. Tim Flannery uncovers one of the most breathtaking adventures of the world's longest recorded unbroken raft journey on the Australian coast.
In Australia's extreme North, Neil Oliver arrives on Horn Island to uncover the role of Australia's only indigenous battalion, a World War II fighting force of Torres Strait Islanders.
On this lush-green island, 1500kms from the mainland. Neil Oliver wanders amidst penal ruins, as he discovers the legacies of two historic figures; an audacious convict, and the second a reforming commandant.
Neil Oliver discovers the fatal engineering errors behind Cape St George Lighthouse that cursed Wreck Bay for four decades. In Callala Bay, Tim Flannery uncovers the life-saving properties of seaweeds.
Tim Flannery begins this north-western adventure in the remote Montebello Islands, where he finds evidence of British atomic testing from 1952. Neil Oliver boards an iron ore carrier to discover only a tiny margin of error allowed in docking and loading these enormous vessels.