This science fiction novel takes place in the year 2203, if we take literally the age of 250 years. A rogue planet, populated by strange machines known as Pyramids, has stolen the Earth from the Solar system, taking it off into interstellar space. The moon has been 'ignited' by alien technology to serve as a miniature sun around which both planets orbit. This new sun is rekindled every 5 years, though as the book opens, the rekindling is nearly overdue and there is fear among the populace that it may never happen again. - Summary by Wikipedia

Ross was a junior trader on Halsey's Planet, and had great prospects but was not happy at all. Everything smelled of decay. The whole planet seemed to be slowly disappearing, the population dwindling month by month and year by year and yet no one seemd to care or even notice. Something was very, very wrong. When the first interstellar transport in 30 years arrived on Halsey's Planet, it brought things to a head. The ship had touched on six other colony worlds - and all six had been devoid of human life...