On a planet of intelligent plantlike creatures, the clone of a human scientist clones Mr. Spock for use in a galactic peace mission.



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Episode cast overview:
Capt. Kirk (voice)
Mr. Spock / Spock II (voice)
Dr. McCoy (voice)
Sulu (voice)
Uhura (voice)
(credit only)


On a planet of intelligent plantlike creatures, the clone of a human scientist clones Mr. Spock for use in a galactic peace mission.

Plot Summary | Add Synopsis

Plot Keywords:

23rd century | See All (1) »



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Release Date:

20 October 1973 (USA)  »

Company Credits

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Technical Specs


| (technicolor)
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Did You Know?


The idea of the Phylosians was forced upon Walter Koenig by Gene Roddenberry. Roddenberry wanted a race of talking plants in the animated series because it was not possible to do on the original Star Trek (1966). Walter Koenig had to write 10 to 12 drafts of the script before it was accepted by Roddenberry. See more »


A close-up of Sulu's head toward the end of the episode shows his neck stopping at the collar line; in other words, his body is missing. See more »


Mr. Spock: Readings indicate the beings used almost 70% of their brains. A very high ratio.
See more »


Featured in Atop the Fourth Wall: Raver #1 (2013) See more »

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User Reviews

"I'm not sure I can take too much of this..."
9 April 2015 | by (Bradenton, Florida) – See all my reviews

The animated "Star Trek" series sucked in many ways. However, often the scripts were decent enough you could almost ignore that the animation was drawn by chimps. Well, in the case of "The Infinite Vulcan" you have the worst of both worlds--terrible animation and an incredibly dopey story--one written by Walter Koenig and Gene Roddenberry!

When I try to explain the plot, bear with me. This is because I really have no idea what I saw and the story is an incomprehensible mess! The crew land on a planet ruled by sentient plants and their leader is a giant clone of a crazy plant-lover from over two centuries ago! His plan was to invade the galaxy and impose peace on everyone. Now, for no real reason, they abduct Spock and try to make a giant Spock to rule over everyone. Huh?!

This is just crap...total crap. I don't know how the voice actors could even utter such dopey lines as you'll hear in this one and my suggestion is that you take heed from the summary--which was spoken by Dr. McCoy during the episode!

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