An alien distress call draws the Doctor and Peri to Earth, 1985, where they uncover a Cyberman plot to change the course of history.
The Doctor
Peri Brown
Lytton
Griffiths
Russell
Payne
Cyber Leader
Cyber Controller
Flast
Varne
Bates
Stratton
Cyber Lieutenant
Cyberman
Bill
David
Rost
Threst
