In 1959 a Skytrain plane flees Tibet - carrying a precious artefact - but after crossing the Himalayas it is never seen again . . .Sixty years later Dirk Pitt and NUMA are surveying near the Philippines when a rogue wave nearly sinks their ship. Diverting to rescue washed-away islanders, Pitt discovers the wave has raised a sunken relic - an ancient cargo plane.But before he can get to the bottom of one mystery, Pitt is hit with another: beat the Chinese military to find a lost hypersonic missile. Yet what should be a simple search and retrieve reveals evidence of a far more dangerous weapon.Because the rogue wave that almost sank Pitt and devastated the islands was no natural phenomenon. And the weapon that caused it is to be turned on a much bigger target . . .In his twenty-sixth adventure, Dirk Pitt is once again plunged into dangerous waters in a desperate race against time.