Captain Scarlet and Destiny Angel are at a Spectrum training Base in Castle Balmeath, Scotland. The base commander, Astrid Winters, is turned into a Mysteron, but tells Scarlet she only wants to help humanity end the war and that she was sent by represents of a faction of the Mysteron consciousness which believes the war with Earth is a mistake. Winters is willing to pass the secret of defeating the Mysterons to Colonel White alone, but all the forces that the Mysterons can bring to bear will be ranged against her getting that far.