The TARDIS is drawn by a mysterious force and lands on the alien planet Vortis. There the Doctor, Ian, Barbara and Vicki find themselves caught up in a war between an evil force known as "The Animus", its ant-like Zarbi allies, and the butterfly-like Menoptra race and their allies the subterranean Optera.
Daniel Williamson [edited]
Did You Know?
Fans voted this number 151 in a countdown of the 163 Doctor Who
(1963) stories in Outpost Gallifrey's 40th anniversary poll in 2003. See more
After the Doctor and Ian leave the Tardis, a piece of elastic can be scene stretching from Ian's pocket. This is how his pen "vanishes" later in the scene. See more
Well, well, well. That is remarkable.
Gracious. During all my travels, I don't think I've ever come across this. Magical. Isn't it extraordinary? I say, are you there Chesterton? Chesterton. What are you doing, dear boy? Fiddling and gaping over there. Come over here and learn something.
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