Having arrived in 1975, The Doctor (Patrick Trouton) and his assistants discover that sinister things are afoot at an electrical conglomerate; a company that’s managed to monopolise the entire world market. Furthermore, the shadowy CEO of the company is actually in league with the Cybermen and together plot a full-scale invasion of our planet. With a strategy already in motion, is it too late for the Doctor to foil the Cybermen’s dastardly plan?