Humankind is making the planet Earth uninhabitable. But other eyes are watching and redemption may be offered from an unexpected source... Polly Hawkins has been Prime Minister for four years when she is faced with her biggest challenge. A spaceship arrives from another solar system. To everyone's astonishment, its crew is human. They bring news about mankind's origins and about threats to mankind. Polly has to manage working with her visitors as well as with her fellow heads of government as it becomes clear that the visitors are not the first to show an interest in the planet.