In the azure, deep, shark-infested waters of the Bahamas, a group of young diving tourists discover the wreckage of a cargo plane underwater. They believe that their childhood dreams of treasure hunting are about to come true. What they don't realize is that tens of thousands of smuggled goods are buried among the wreckage, and a large number of bandits are eyeing this ill-gotten wealth with greed. As the water pressure gradually increases and this group of friends begins to talk excitedly about the treasures in front of them, the treasure hunters expose their whereabouts and become the objects of pursuit...