The Twilight Zone (1985)

"The Last Defender of Camelot" takes place in 1986 in London and, eventually, Cornwall. An extension of the story by Sir Thomas Mallory, a mid-50's man is drawn toward Cornwall with a sense of urgency. He is jumped by 3 young men, who are thrown aside like playthings. The old man forces one of the younger ones to take him to the boss. The boss is a late-30's woman, who reveals herself as Morgana. Lancelot is quested by her to see Merlin, who is asleep in a cave in Cornwall. Lancelot finds Merlin awakened. Merlin has different plans to resurrect a new king. What does the world's oldest magician have up his sleeve? Who can save mankind? Perhaps the Last Defender of Camelot?