A Jewish family in Germany and the shadows of the past - told from the perspective of teenagers with a warmth that touches everyone. Bettina Kupfer skillfully intertwines the story of Amit's grandmother Minnie fleeing in 1940 with Amit's search for her great-aunt Betty in 2017. All that remains of Minnie's family is a small bag with three stones, a family photo, and the diary entries in which she recounts her escape from the Nazis at the age of 13 in 1940. Her flight took her through Luxembourg, Belgium, and France to Switzerland. Amit (12) embarks on a quest to find Betty, Minnie's younger sister who went missing at the age of one in 1940, using these diary entries as her guide. In the search for Betty, Amit learns what it means to grow up, which also involves confronting the world of the past.