In the summer of 1939, five-year-old Jacques Austerlitz is sent to England on one of the Kindertransports and placed with foster parents in Wales. For reasons of their own, the childless Calvinist couple erase from the boy all knowledge of his identity. Throughout his life Austerlitz is haunted by feelings of otherness, but it is not until retirement that he embarks on a journey to make sense of his curious early memories and explores what happened to him half a century ago.