Billy Pilgrim – hapless barber's assistant, successful optometrist, alien abductee, senile widower and soldier – has become unstuck in time. Hiding in the basement of a slaughterhouse in Dresden, with the city and its inhabitants burning above him, he finds himself a survivor of one of the most deadly and destructive battles of the Second World War. But when, exactly? How did he get here? And how does he get out?