Gravity's Rainbow is a 1973 postmodern novel by Thomas Pynchon. The narrative is set primarily in Europe at the end of World War II and centers on the design, production and dispatch of V-2 rockets by the German military. In particular, it features the quest undertaken by several characters to uncover the secret of a mysterious device, the Schwarzgerät, which is slated to be installed in a rocket with the serial number "00000".