Jojo Rabbit is a 2019 satirical drama film written and directed by Taika Waititi, adapted from Christine Leunens's 2008 book Caging Skies. Roman Griffin Davis portrays the title character, Johannes "Jojo" Betzler, a ten-year-old Hitler Youth member who finds out that his mother (Scarlett Johansson) is hiding a Jewish girl (Thomasin McKenzie) in their attic. He must then question his beliefs while dealing with the intervention of his imaginary friend, a fanciful version of Adolf Hitler (played by Waititi) with a comedic stance on the politics of the war.
https://en.wikipedia.org/wiki/Jojo_Rabbit