Colonel White is dining in London with his daughter Victoria when he receives a report from Lieutenant Green that a Vampire fighter jet has been stolen from the USAF base at Little Marwood and is targeting the Schleswig-Holstein nuclear plant in Germany. While Spectrum's attention is distracted by this latest threat, Victoria is kidnapped and her abductors threaten to kill her unless the Colonel acquires a Spectrum Rhino to assist them in mounting a bullion robbery. White agrees to the demands while Scarlet and Blue attempt to trace Victoria's whereabouts, but they are unaware that the operation is being controlled by Captain Black who plans to bring about the downfall of the Spectrum organization!