In a world of greenhouse drought and fuel shortage the Arab National Army advances through Spain and Ukraine. Neutral Russia looks on. The Allies, even with state-of-the-art American and German technology, are losing. Then, among the misty slopes of the Pyrenees near Bagneres-de-Luchon, on a field of buttercups and corpses, a CRAV operated by Sergeant Gordon Means encounters a blue light. The light approaches the vehicle, and Gordon hears, in the back of his head, the monotonous, sleepy tap-tap-tap of sleet against a window. The light follows him like a stray dog. He calls it Rover. These hovering blue lights, are they friend or foe? If they save lives, why do they also sometimes kill, and drink the blood of the dying, every drop? And Linda Parisi, a middle-aged woman who lives with her excitable poodle, Lacy, in Arlington, Virginia, and writes books about UFOs she has never seen - why does General Lauterbach want to speak with her?