Sans le sou et avec une dent contre les compagnies d’assurance, Rex Black simule sa mort et il retrouve sa femme et l’argent à Malaga, où les choses semblent s’être calmées. Mais quand l’enquêteur des assurances surgit, c’est un jeu du chat et de la souris qui commence.
Legend has it that if the famous Barbary Apes leave the Rock of Gibraltar, it's a sign that the British will lose control of it. During World War II, a British officer is put in charge of the apes. When he detects that the animals' morale is slipping, he hatches a plan to go behind the German lines to "kidnap" a new ape for his charges to lift their spirits before the Germans find out about their condition and use it as propaganda.