Diving the frigid Chesapeake Bay for oysters, former SEAL Ben Blackshaw discovers a sunken speedboat filled with nineteen cases of gold bullion, the twentieth case concealing a dirty bomb counting down to zero. At the wreck's helm Blackshaw finds the corpse of a man he hasn't seen in fifteen years - his father. Corrupt NSA operative Maynard Chalk leads a pack of bloodthirsty mercs to steal the infernal cargo. Blackshaw must rally his fellow Smith Islanders for a fight to the death, or ignite World War III.