Knights from a parallel universe arrive on Earth to find the legendary sword Excalibur. Only the Doctor and Ace, with the assistance of Brigadier Lethbridge-Stewart, can save the Earth from total catastrophe.
Sylvester McCoy
The Doctor
Sophie Aldred
Ace
Nicholas Courtney
Brigadier Lethbridge-Stewart
Jean Marsh
Morgaine
Angela Bruce
Brigadier Winifred Bambera
Marek Anton
The Destroyer
Tai Ling
Shou Yuing
Marcus Gilbert
Ancelyn
