Back Door to Hell Studio Brief 3 As the film is set in the Phillipines during the Second World War, naturally the Japanese army are ‘the enemy’. Due to the undercover nature of the main characters’ mission, Japan has been portrayed here by the red circle seen in its flag. The overarching position of the sun implies the oversight of Japanese forces throughout the film. Use of the same hue to represent the mountains also doubly signifies as blood dripping from the sides, adding to the severity and drama of the narrative.