Vienna, 1938. Samuel Adler is six years old when his mother sends him on the last Kindertransport train out of Nazi-occupied Austria to England. Arizona, 2019. Eight decades later, Anita Diaz and her mother board another train, fleeing looming danger in El Salvador and seeking refuge in the United States ... Both a testament to the sacrifices that parents make, and a love letter to the children who survive the most unfathomable dangers. Powerful and moving.