Jojo Rabbit: Directed by Taika Waititi. With Roman Griffin Davis, Thomasin McKenzie, Scarlett Johansson, Taika Waititi. A young German boy in the Hitler Youth whose hero and imaginary friend is the country’s dictator is shocked to discover that his mother is hiding a Jewish girl in their home. A World War II satire that follows a lonely German boy whose world view is turned upside down when he discovers his single mother is hiding a young Jewish girl in their attic. Aided only by his idiotic imaginary friend, Adolf Hitler, Jojo must confront his blind nationalism.