Alice Evans and Ioan Gruffudd Pictures: Alice Evans and Ioan Gruffudd arrive on the red carpet at the "Sanctum" movie premiere held at Grauman's Chinese Theatre on January 31, 2011 in Hollywood, California.
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. Soon, they are confronted with the unavoidable question: Can they survive, or will they be trapped forever?