When a submarine is mysteriously downed in the Persian Gulf, CIA tactician Douglas Griffin is reactivated into his former SEAL team to investigate. Simultaneously, a string of mystifying attacks pits the U.S. Navy against the underwater Kingdom of Atlantis in a full-blown war against humanity's extinction. With the threat of global devastation imminent, twisting realities lead the SEALs from Atlantis' 5000 fathoms to the even deeper political waters...