
Arriving on Space Station Nerva in its distant past, the Doctor, Sarah and Harry find its crew threatened by a mysterious plague. Discovering that things are not as they seem, they uncover a Cyberman plot to destroy Voga, planet of gold.
Doctor Who

Sarah Jane Smith

Harry Sullivan

Commander Stevenson

Lester

Tyrum

Vorus

Warner
Magrik

Cyber-Leader

First Cyberman
Seprah
