A look behind the scenes of the busiest transport and event hub in the world – the iconic Sydney Harbour.
When a police boat crashes onto rocks, salvage diver Brendan risks his life to save nearby beach goers from the debris. Fisheries officer Joel wrestles a man-eating shark.
Police officer Gerard faces a public holiday party that threatens to spiral out of control. Deckhand Andy enters a danger zone to salvage a boat from the ocean floor.