Set during WWII and loosely based on real-life events, a warship carries hundreds of Australian soldiers across the Timor Sea to the frontline of WWII. Suddenly, Japanese fighter jets scream out of the sky, and within minutes the ocean becomes a hell of steel, fire, oil and blood. While a handful of soldiers build a makeshift raft from floating debris as they cling to their lives, their biggest battle is yet to come. In the dark below, the ultimate apex predator — a great white shark — hunts in the wreckage and is drawn to the smell of fresh blood in the water.