Powerful forces are set to 'spruce up' Earth's solar system, clear away 'extra' items deemed unneeded, like asteroids and small moons. Naturally, there are many that protest this plan and some are willing to commit violence to meet their goals. Unknown to all are yet more dangers, set to be disturbed and angered by what is planned.
Continuity
The novel provides an explanation as to why Jupiter had only twelve moons at the time of the Fourth Doctor serial Revenge of the Cybermen when, at last count, the planet has sixty-three moons. In Cole's author's note, he states that his inspiration for the book was to explain away the discrepancy.
