Captain Scarlet heads up an international intelligence agency as they battle against the Mysterons, an alien species from Mars that vows vengeance after a misunderstanding with humans.
2068: Earth is at war with a bizarre Martian enemy - the Mysterons. Only Spectrum the world security organisation, and its number one agent, Captain Scarlet, can hope to defend the planet against the invading aliens and stop the interglactic war of nerves before Earth is destroyed!