Summary
Sarah is invited by Mike Yates to visit him at a Buddhist meditation centre where he has been staying. A group of people there, led by a man named Lupton, are misusing the meditation rituals in order to make contact with powerful alien forces, which manifest themselves as a giant spider. The spider is an emissary from the ruling council on the planet Metebelis 3, sent to recover the blue crystal that the Doctor previously found there and that has now been returned to him by Jo.
The Doctor and Sarah journey to Metebelis 3 and aid its human colonists in an attempt to overthrow the 'eight legs'. They then return to Earth in the TARDIS. The Doctor recognises the meditation centre abbot K'anpo as his former Time Lord guru and, at his prompting, returns to Metebelis 3, where the humans' revolt has ultimately failed. He demands an audience with the Great One - a huge mutated spider revered by the others - and offers her the crystal.
The Great One uses it to complete a crystal lattice, which she believes will increase her mental powers to infinity. Instead, the rising power kills her. The other spiders also die as their mountain explodes. K'anpo has meanwhile been killed while protecting Yates from an attack by the spider-controlled residents of the meditation centre, only to be reborn in the form of his assistant Cho-je - his own future self.
Some weeks later, the Doctor is brought back to UNIT HQ by the TARDIS, having been fatally affected by the radiation in the Great One's cave. K'anpo appears and, with his help, the Doctor regenerates. |
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