Between 1938 and 1940, Britain admitted nearly 10,000 mostly Jewish children from Germany, Austria, Czechoslovakia, and Poland, sending them off on trains without their parents in a rescue effort known as the Kindertransport. Mark Jonathan Harris builds the film almost entirely from the survivors themselves, now elderly, describing platform goodbyes they still remember in specific, physical detail: a father's last instructions, a mother's face through a train window, a toy clutched the whole crossing. Archival footage of Kristallnacht and the transports themselves sits alongside these interviews, along with British families who took the children in, some with kindness and some with indifference or worse. Actress Judi Dench narrates. The film does not stop at the rescue's triumph; it follows what happened after, the children who never saw their parents again, the ones who struggled for years with the families that raised them, and the guilt of having survived when so much of their families did not.