The fight for Earth has been lost. With the failure of Operation Redemption in the last book the human race now finds itself on the brink of extinction. The few humans still alive on Earth can barely recognize their own planet. All the freshwater gone and the oceans down to 21% of their former volume, and still the aliens continue to drain away the remaining water. Earth is now a barren planet and this is the world that the former crew of the grounded submarine, Ghost of Atlantis, is trying to survive in. Of course, things are not much better for their former commander, Captain Noble, who finds himself caged in some kind of alien zoo spaceship and headed to an unknown destination. Perhaps humanity's best hope of survival is Dr Winston's team who are on their way to Mars aboard the NTC Sunspot in a desperate attempt to find a new home - too bad for them the aliens are already there too.