

When the launch of the first manned mission to Mars goes awry due to sabotage, International Rescue is requested to assist in the mission's second attempt.

In 2068, the indestructible Captain Scarlet leads the agents of Spectrum in a war of nerves against the Mysterons, who seek revenge for the accidental destruction of their base on Mars.

Several members of the International Rescue team attend the maiden flight of Brains' revolutionary airship Skyship One, unaware that they have been lured into a deadly trap.