The Sky Is Falling (2000)

1943, an estate north of Firenze. The weight of the world is on the shoulders of Penny, who's about 10. An orphan, she must watch over her little sister when they go to live with her aunt and uncle. Penny's a Catholic, and worries about her uncle's soul. He's Jewish, progressive and a free thinker, a fair boss, and devoted to his family. He can be stern, so Penny also worries that she'll never please him and that he won't love her. Then, after the Allied forces land in Sicily and the Germans begin their retreat, Penny must worry about her uncle's life. She tries logic and appeals to human decency. Can a child keep the sky from falling?

Unfortunately the movie The Sky Is Falling is not yet available on HBO Max.