The Mysterons second target is the Director General of the Asian Republic. The Director is on a visit to London and is scheduled to fly back to Asia via London airport but the Mysterons have other plans.
Spectrum attends a secret conference to demonstrate two new anti Mysteron gadgets (A Mysteron detector and a Mysteron gun), but the Mysterons announce they intend to sabotage the demonstration of Spectrums new anti-Mysteron devices.
When the Lunar Controller announces the Moon's independence from Earth in the war of nerves with the Mysterons, Scarlet, Blue and Green journey to Lunarville 7 to investigate reports of an unauthorised complex under construction in the Humboldt Sea.
Captain Scarlet and the rest of Spectrum are in a desperate race against time to defeat the Mysteron's latest threat. The total destruction of the massive desalination plant at Najama, high in the Andes Mountains.