Tyrone Slothrop, a GI in London in 1944, has a big problem. Whenever he gets an erection, a Blitz bomb hits. Slothrop gets excited, and then (as Thomas Pynchon puts it in his sinister, insinuatingly sibilant opening sentence), "a screaming comes across the sky," heralding an angel of death, a V-2 rocket. The novel´s title, Gravity´s Rainbow, refers to the rocket´s vapor arc, a cruel dark parody of what God sent Noah to symbolize his promise never to destroy humanity again. History has been a big trick: the plan is to switch from floods to obliterating fire from the sky. Slothrop´s father was an unwitting part of the cosmic doublecross. To provide for the boy´s future Harvard education, he took cash from the mad German scientist Laszlo Jamf, who performed Pavlovian experiments on the infant Tyrone. Laszlo invented Imipolex G, a new plastic useful in rocket insulation, and conditioned Tyrone´s privates to respond to its presence. Now the grown-up Tyrone helplessly senses the Imipolex G in incoming V-2s, and his military superiors are investigating him. Soon he is on the run from legions of bizarre enemies through the phantasmagoric horrors of Germany...