The TARDIS arrives on present day Earth where the Doctor and Ace investigate a distress signal, only to discover knights from another dimension led by the evil sorceress Morgaine and her son Mordred have arrived in our dimension to seek out Excalibur, the mythical sword of power of the legendary King Arthur. The Doctor is mistaken for Merlin, and the Doctor believes Merlin may be his future incarnation. Reuniting with Brigadier Lethbridge Stewart, The Doctor, Ace, a young Chinese woman named Shou Yuing, U.N.I.T officer Brigadier Winifred Bambara and a knight named Ancelyn set out to stop Morgaine and her knights unleashing the demonic Destroyer of the Worlds and prevent Morgaine and Mordred from destroying the planet with a nuclear warhead that U.N.I.T is transporting across the countryside. Written by
Did You Know?
Attracting only 3.1 million viewers, this episode has the dubious distinction of being the lowest rated episode produced during the original 26 year run of Doctor Who
(1963). See more
Ah... little man. What do you want of me?
Get off my world!
Pitiful. Can this world do no better than you as their champion?
Probably. I just do the best I can.