Jojo Rabbit is about a young boy living during World War II. His only escapism is through his imaginary friend, an ethnically inaccurate version of Adolf Hitler, who pushes the young boy's naive patriotic beliefs. However, this all changes when a young girl challenges those views and causes Jojo to face his own issues.

Nell, Simon, and their boy Art are ready to welcome friends and family for what promises to be a perfect Christmas gathering. Perfect except for one thing: everyone is going to die.