1942, France. The persecution of Jews begins in German-occupied Paris. Unwilling to end up in the Drancy deportation camp, from where the only route is to Auschwitz, Eva Traube flees to the small town of Orignon, located in the free zone. She hopes to move to neutral Switzerland, but by chance she joins the Resistance movement. Using her artistic talent, Eva creates forged documents, helping hundreds of Jewish children leave the country. Using a secret code, she writes their real names in an ancient Gospel, calling it 'The Book of Lost Names.' 2005, New York. Eva learns that the book she thought was lost for so many years is in a Berlin library. Only Eva has the key to the code; only she can restore the real names of people who have lived under fictitious ones for more than half a century and help reunite those separated by the war.