The 19 years old Thomas wakes up in a hospital after three years in a coma. He doesn't remember anything. The psychologist Anna tells him that his family has been murdered and that he is the only survivor of the massacre while his sister Laura is still missing.
Anna and Adam, a young couple from Paris with Polish Jewish origins, leave for the first time of their lives in Poland. If Adam is not very excited about this trip, Anna is excited to discover the land that is also her grandmother's.