Operation Sleeping Dragon was a plan devised by the Japanese High Command in the last days of World War II in the desperate hope to snatch victory from the Allies through the use of biological warfare. In 1945, Japan was being systematically pounded to rubble by devastating air raids, with calls for its unconditional surrender and the threat of using the atomic bomb if Allied demands were not met. Around this time, Unit 731 of the Japanese Army Biological Warfare Section discover a deadly airborne virus in a remote area of occupied China which is as contagious as the common flu with the deadly effects of the Ebola virus. The operation involves 7 English speaking Japanese agents travelling on a submarine where they would each make their way to a major Australian city and release the virus upon receiving a coded signal. The submarine with all 7 agents and the virus embarks on the mission to Australia, however, is lost somewhere near Australia during the turmoil in Japan leading up to its surrender. Some 60 years after the war, the submarine is discovered intact by a Texan Oil Billionaire while taking a pleasure cruise on his private yacht. He arranges the raising of the submarine with the assistance of his oil exploration ship, which was in the area, completely oblivious to the danger inside. The Australian Intelligence Agency, the NSA discover the plan and assigns a disgruntled Intelligence Officer Siebert to the case thinking that it will be of little importance. Just fresh from long service leave and a bitter divorce, Siebert discovers much to his horror that there is much more to this case than the discovery of an old war wreck. When it is finally discovered that the submarine is carrying the dragon virus, a desperate race against time begins before it can be unleashed on an unsuspecting world.