No one believed Professor Elrick of the London Radar Research Laboratory when he announced in 1977 that the Earth was in emminent danger of attack. Ever since his discovery of the dark star, Nero, the professor and his young assistant, Jim Shannon, had studied the planet and its satellites through the radarscope with a growing sense of impending gloom. Much like and "War of the Worlds and " this book describes the invasion and ultimate salvation of the Earth.