Unstuck in time, Billy Pilgrim, Vonnegut's shattered survivor of the Dresden bombing, relives his life over and over again under the gaze of aliens; he comes at last to some understanding of the human comedy. The basis of George Roy's great 1972 film and perhaps the signature student's novel in the 1960's embracing protest and the absurdity of war.
I now, I know (as Kurt Vonnegut used to say when people told him that the Germans attacked first). It sounds crazy. It sounds like a fantastic last-ditch effort to make sense of a lunatic universe. But there is so much more to this book. It is very tough and very funny; it is sad and delightful; and it works. But is also very Vonnegut, which mean you'll either love it, or push it back in the science-fiction corner.