Featuring the "Peach Boy", character of Japanese folklore, the film is aimed at children, telling the story of a naval unit consisting of the human Momotarô and several animal species representing the Far Eastern races fighting together for a common goal. In a dramatization of the attack on Pearl Harbor, this force attacks the demons at the island of Onigashima (representing the Americans and British demonized in Japanese propaganda), and the film also utilizes actual footage of the Pearl Harbor attack.