The Doctor is summoned by the mysterious and powerful White Guardian, and sent on a quest to find the six segments of the Key to Time, which, once assembled, will restore balance to the Universe. Joining the Doctor and K9 is the smart and sassy Romana, a Time Lord fresh from the Academy. Landing on the wintry planet of Ribos to locate the first segment, the TARDIS crew quickly find themselves embroiled in a little local trouble with a pair of conmen and an unstable warlord...
Tom Baker
The Doctor
Mary Tamm
Romana
John Leeson
K-9 (voice)
Cyril Luckham
The Guardian
Iain Cuthbertson
Garron
Nigel Plaskitt
Unstoffe
Paul Seed
Graff Vynda-K
Robert Keegan
Sholakh
