STORY PLOTLINE
The TARDIS materialises in the English countryside near the village of Carbury, where a nuclear missile convoy under the command of UNIT's Brigadier Winifred Bambera has run into difficulties.
Lying on the bed of the nearby Lake Vortigern is a spaceship from another dimension containing the body of King Arthur, supposedly held in suspended animation, and his sword Excalibur.
DVD EXTRAS
COMMENT Spoliers ahead