Throughout her research for a journalistic piece about the 60th anniversary of the roundups of Jews by the French police during World War II, Julia discovers the story of Sarah Starzinski. Sarah was 10 years old in 1942, at a time when the yellow star on her chest didn't hold much meaning to her until she and her family were forced into camps outside of Paris because of it. As Sarah's story unfolds, Julia becomes entrenched in its many folds, and discovers more connections between Sarah's life and her own than she ever expected. Sarah changes Julia's life tremendously, and Julia ensures that Sarah's story will never be forgotten.