 Colonel White, Captain Scarlet and Captain Blue (voiced by Donald Gray, Francis Matthews and Ed Bishop) travel to an African game reserve to attend a secret conference that is being held underground in a room beneath a hunting lodge.The conference host, Spectrum Intelligence scientist Dr Giadello, unveils two anti-Mysteron devices inspired by the discoveries that Spectrum made when the Mysterons tried to assassinate General Tiempo.The "Mysteron Gun" fires an electron beam that permanently destroys Mysteron reconstructions by exploiting their vulnerability to electricity, while the "Mysteron Detector" is a radiographic device that identifies reconstructions through their resistance to X-rays.