The First National Blood Bank stores its reserves in an impregnable bank in the moon's Descartes Crater. With 80%. of humankind infected by P2. the price of a healthy litre of blood has reached 1.84 million dollars. Dallas knows just how secure the vaults are - he designed them. But he needs that blood - without it his daughter will die. There's only one way to get it: he knows it, his employers know it. Dallas must attempt the impossible. If he succeeds, mankind might just have a future.