"This is Colonel White to Spectrum Headquarters London. Cloudbase is severely damaged and out of control. We will crash in approximately one minute. I intend to go down with my command. Out."
- Colonel White
Essentially a nightmare sequence, "Attack on Cloudbase" follows the Symphony Angel, lost in the desert and (thanks to the Mysterons) hallucinating about the Mysterons finally coming to Earth and mounting the title attack, in which the Symphony Angel's hallucination even shows Captain Scarlet being permanently killed.