The Doctor returns to Peladon fifty years after his last visit, to find Queen Thalira, daughter of the late King Peladon, on the throne. A tense labour dispute between Pel nobility and miners is worsened when apparitions of their deity Aggedor attack and kill several miners. The Galactic Federation desperately needs trisilicate for its war against Galaxy 5 and sends in brutal Ice Warrior troopers to ensure production. The Doctor discovers a devious plot at the heart of Aggedor's appearances.
Jon Pertwee
as The Doctor
Elisabeth Sladen
as Sarah Jane Smith
Nina Thomas
as Queen Thalira
Frank Gatliff
as Chancellor Ortron
Rex Robinson
as Gebek
Ralph Watson
as Ettis
Graeme Eton
as Preba
Michael Crane
as Blor
Terry Walsh
as Guard Captain
Max Faulkner
as Miner
Roy Evans
as Miner
Nick Hobbs
as Aggedor
