One of the darkest moments in French history occurred in 1942 Paris when French officials rounded up over ten thousand Jews and placed them in local camps. Eventually, over eight thousand were sent off to German concentration camps. As ten-year old Sarah (Mélusine Mayance) and her family are being arrested, she hides her younger brother in a closet. After realizing she will not be allowed to go home, Sarah does whatever she can to get back to her brother. In 2009, a journalist named Julia Jarmond (Dame Kristin Scott Thomas) is on assignment to write a story on the deported Jews in 1942. When she moves into her father-in-law’s childhood apartment, she realizes it once belonged to the Strazynski family, and their daughter Sarah.