The Past and Future King! London, England in the year 3000 is being invaded by aliens. A man flees to a historical dig site. The aliens pursue him. Inside, the man opens the crypt of King Arthur Pendragon, who rises and kills the aliens. Arthur offers to take on the man as his squire. The man agrees. The two kill aliens outside the dig site and take their spacecraft. In North America, the aliens are attacking as well. Arthur and his squire reach Stonehenge. Once there, Arthur calls forth Merlin. The Lady of the Lake throws the sword Excalibur to Arthur, but in midair it disappears. At the United Nations, a rock thrusts up from the floor of the assembly room. Stuck in the rock is Excalibur.
