The film is adapted from the autobiographical novel billiard bag written by Joseph Rover, a famous contemporary French writer. In German-occupied France, Morris and Joe were a pair of young Jewish brothers, their father ran a barber shop, and the family lived a warm and happy life. Until the Nazis required all Jews to sew a yellow hexagonal star on their coats to show their difference, the attitude of their classmates towards them began to change because of people's prejudice against Jews at that time. Seeing that the situation of the Jews became more and more embarrassing, the father ordered the two brothers to flee to the free zone immediately, and the family agreed to meet in Nice. Before leaving, my father ordered not to tell anyone about their Jewish identity. It was on the leaving train that they really saw with their own eyes the Nazi persecution of the Jewish people. On the long road to escape, the Nazis seemed to be everywhere, and their amazing wit and courage and the help of strangers allowed them to avoid the threat of death again and again, and the two brothers depended on each other only to be reunited with their families.