Jo Weisman, a young Jewish Parisian, and his family are taken by the Nazis and Vichy collaborators in the rafle du Vel' d'Hiv. Anna Traube, a 20 year old woman, walks out of the velodrome with forged papers; her mother and sister are captured. Annette Monod, a Protestant nurse, volunteers for the velodrome, and assists Jewish doctor David Sheinbaum. From the Ve'lodrome d'Hiver Jo's family and Sheinbaum are transferred to Beaune-la-Rolande. Monod comes along.
The parents are dispatched by train to supposed "work camps in the East" (in reality the extermination camps), and Sheinbaum too. Monod wants to come along, but Sheinbaum talks her out of that. After some time authorities announce that for humanitarian reasons the children will be united with their parents in the east (in reality the adults have already been killed, and they are now going to kill the children). Some children are happy. However, Jo and a friend Pavel hear the truth and escape under barbed wire, taking along money that the family had hidden in the toilets along with their valuables.
After the war Monod searches for survivors at the Ho^tel Lutetia; she is relieved that Jo and Noe' turn out to have survived.