Weaves together past and present, tracing the ripple effects of war and immigration on one child in Europe in 1938 and another in the United States in 2019. Vienna, 1938. Samuel Adler was six years old when his father disappeared during Kristallnacht-the night. Arizona, 2019. Anita Diaz, a blind seven-year-old girl, and her mother board another train, fleeing looming danger in El Salvador and seeking refuge in the United States.