The narrator opens with an elaborate hyperbole of a subtitle for the book, explaining that he is a veteran living in easy circumstances, who witnessed the bombing of Dresden, Germany as a prisoner of war and survived to tell the tale in the manner of the planet of Tralfamadore where the flying saucers come from. He went back to Dresden with a war buddy years later. He ends the first chapter saying that his war novel, his novel of looking back is over, since there is nothing intelligent one can say about a massacre.
He then tells the story of Billy Pilgrim, who is unstuck in time– he uncontrollably gets flung around the scenes of his life. He was a prisoner of war, became an optometrist, and married a rich girl who died of carbon monoxide poisoning. He was the only survivor of a plane crash. He was abducted and kept in a zoo on the planet Tralfamadore, where he was mated with movie star Montana Wildhack.
With every mention of death in the book, the narrator says, “So it goes,” Tralfamadorians believe that time exists all at once and not moment-by-moment like beads on a string. So a person is never dead, because he is still alive in the past. Billy’s daughter Barbara is furious at him for trying to tell people his crazy notions.
He wandered behind enemy lines with a fat, sadistic soldier named Roland Weary and two scouts, who ditched them. Weary got so mad at Billy for this that he beat him and when they were captured by German soldiers, he convinced many others that it was Billy’s fault when he died. Pre-capture, Billy also traveled to, among other places, his mother’s nursing home, where she asks him weakly how she got old, and to the YMCA where his father taught him to swim by throwing him into the deep end. He also goes back to the night of his abduction.
Everyone at the prison camp was shocked to see how weak the Americans were. Billy was delirious, and he flipped out and was hospitalized. Edgar Derby, an older soldier who would be shot for plundering a teapot, stayed with him. Paul Lazzaro, a weak, hateful man, told Billy he had sworn to avenge Roland Weary by shooting him. Billy was not worried; he had seen when he would die. He traveled in time to his second hospitalization during his last year of optometry school. There he met Eliot Rosewater, who introduced him to the science fiction works of Kilgore Trout.
While there, Billy traveled back to Tralfamadore. When he told the crowd at the zoo to fear the power of Earthlings, they thought he was stupid; they knew it would be them, experimenting with a new jet fuel, who would destroy the universe.
Billy and the other soldiers were transferred to Dresden, which was a beautiful city. Billy traveled to the airplane crash, where he mistook the people who rescued him for German soldiers. During surgery, he traveled back to Dresden. In Dresden, he worked at a factory that made malt syrup with vitamins, which everyone illegally spooned. They were kept in slaughterhouse number five. About a month later, the city was bombed, and the prisoners survived in an underground bunker.
At his eighteenth wedding anniversary party, to which he invited Trout after they met in an alley, Billy flipped out; the barbershop quartet reminded him of the Dresden guards.
Years later, in the hospital after the plane crash, Billy met Air Force Historian and war-hawk Bertram Copeland Rumfoord, who told him that the bombing of Dresden was necessary and had to be kept a secret because of all the American “bleeding hearts.”
After the crash, Billy escaped to New York, where he snuck onto a radio show to preach his Tralfamadorian wisdom.
In the last chapter, the narrator tells of how he traveled back to Dresden, and how Billy and the other prisoners had been made to dig up corpses from the ruins.
Kurt Vonnegut Jr.