Anna and Michael are stranded in the desert. Pell isn't far behind. Will he find them in time?
Not satisfied with terraforming Anna's planet and seeding it with life from Earth, some of the Nirikarr people have never given up wanting the earth for themselves.
But what crashed at Tunguska in Siberia in 1908? Nelli's people believe their ship was destroyed, but it had flown inside a giant sinkhole where a plan to take over the Earth and destroy humankind has been in the planning ever since. Now Anna and Michael are agents for the Nirikarr, the first able to travel between worlds, the renegade group fears discovery and sends agents to kill them.
The couple have three days leave and a translocation device disguised as a hen's egg.
Then Nelli, their Nirikarr friend, shows up on Earth to warn them of danger. But all three are captured and wake up in a dark cellar. After seeing Nelli's alien face, the boy who finds them flees, screaming about demons from out of the ground.
Their egg is gone, and when they follow the boy, they find a desert land of sand and camels and people in blue robes. Without resources, how will they survive? It's only dawn, the heat is oppressive, and they haven't even got any water.