In this intense thriller, three friends from California head to the rugged Australian coast for a cage-dive encounter with deadly great white sharks. But after attracting a swarm of vicious sharks, their tour boat is destroyed by a massive rogue wave. As clouds gather and darkness descends, the three friends find themselves alone and defenceless, afloat in the chilly ocean as hungry man-eaters begin to circle. With little hope of rescue, they must fight to survive using only their courage.