With the entire world unconscious apart from the Doctor and his friends, the Cybermen are poised to invade and only Zoe, the Brigadier and a missile crew can stop them.
Quest roles:
Nicholas Courtney(Brig. Lethbridge-Stewart), Peter Hawkins(Dalek (voice)), Kevin Stoney(Tyrum), Pat Gorman(Soldier), John Levene(RSM Benton), Sally Faulkner(Isobel Watkins), Peter Halliday(Pletrac), Edward Burnham(Professor Kettlewell), Charles Finch(Cyberman), John Spradbury(Cyberman), Clifford Earl(Major Branwell), Norman Hartley(Sergeant Peters), Ralph Carrigan(Cyberman), James Thornhill(Sergeant Walters), Robert Sidaway(Captain Turner), Richard King(Cyberman), Peter Thornton(Cyberman)