Billy Pilgrim is stuck in a time loop, jumping between different periods of his life without control. He moves between three main time periods: his experiences as a WWII POW, his life as an optometrist in Ilium, New York, and his time as an abductee on the planet Tralfamadore.

Slaughterhouse-Five
Billy Pilgrim's life is marked by unpredictable time jumps, forcing him to relive pivotal moments from his past, including his birth in New York, a journey to a distant planet, and the traumatic 1945 bombing of Dresden.