Leaving behind war in the Middle East, Jim Bemis and his buddy, Sandy, plan to pursue a peaceful life running a scuba diving business with Jims Uncle Rob in the Caribbean. On their way there, though, Jim learns that his uncles boat has been found adrift, covered in bullet holes and blood. Ron is presumed dead even though no body was found. The day Jim and Sandy arrive on Saint John Island, they are drawn into a series of events that make them suspect Ron is actually still alive but in hiding. Dangerous characters are on the lookout for Jims uncle due to something he may or may not have found at the bottom of the sea. The boys search for clues as to Rons potential whereabouts. It soon becomes apparent that not every friendly face on the island can be trusted. Their investigation leads them to both friend and foe while a hurricane wreaks havoc. Ron might be hiding, but there are those still willing to kill for the treasure found. Jim and Sandy are now targets, too, as a secret rises from the ocean depths and drowns them in a sea of danger.