Master diver Frank McGuire has explored the South Pacific's Esa-ala Caves for months. But when his exit is cut off in a flash flood, Frank's team—including 17-year-old son Josh and financier Carl Hurley are forced to radically alter plans. With dwindling supplies, the crew must navigate an underwater labyrinth to make it out.
Richard Roxburgh
Ioan Gruffudd
Rhys Wakefield
Alice Parkinson
Dan Wyllie
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Score: 6.3
