"The intrepid crew of the rogue submarine, 'Thunderfish', face a terrible responsibility. Cornered by the navy after a campaign against illegal whalers, Captain Kira Beaumont has been forced to accept a dangerous secret mission, turning her military-trained crew and hi-tech sub into pawns in a volatile international drama.
And the stakes are high: to rescue a crucial diplomat and prevent war, something even greater must be risked...our world's pollution-sick lungs themselves - the oceans!" (source: back cover)