The Enterprise discovers a planet exactly like Earth, but the only inhabitants are children who contract a fatal disease upon entering puberty.



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Episode complete credited cast:
Keith Taylor ...
Jahn's Friend
Ed McCready ...
Boy Creature
Kellie Flanagan ...
Blonde Girl
Stephen McEveety ...
Redheaded Boy (as Steven McEveety)
David L. Ross ...
Lt. Galloway (as David Ross)
Jim Goodwin ...
John Megna ...
Little Boy


The Enterprise receives an old style SOS signal and finds on arrival a planet that is virtually identical to Earth. Kirk, Spock, McCoy and Yeoman Rand beam down to the planet only to find that it is inhabited solely by children. Kirk befriends one of the older children, Miri, but they soon learn that experiments to prolong life killed all of the adults and that the children will also die when they reach puberty. They also learn that the children are in fact, very old. Soon, the landing party contracts the virus and has seven days to find a cure. Written by garykmcd

Plot Summary | Plot Synopsis

Plot Keywords:

puberty | virus | cure | boy | child | See All (45) »


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Release Date:

27 October 1966 (USA)  »

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Aspect Ratio:

1.33 : 1
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Did You Know?


Although all the children on the planet die when they reach puberty, Michael J. Pollard, who played Jahn, was 27 years old when this episode aired, and Kim Darby, who played Miri, was 19. See more »


At the end, Captain Kirk tells Mr. Spock, "Full ahead, warp factor one" which Spock repeats back to him, however, Mr. Spock is sitting at the science station (his normal station) and not at the helm, which is where the ship's movements are controlled. While Spock is not at the helm, this exchange is reflective of Naval command structure where the Captain tells the First Officer what he wants done and the First Officer orders the Crew. This was not the normal for Star Trek The Original Series as it progressed, but it reappeared in Star Trek: The Next Generation with Number One giving the orders. See more »


Mr. Spock: According to their Life Prolongation Plan - what they THOUGHT they were accomplishing - a person would only age one month for every one hundred years of real time.
Yeoman Rand: One hundred years? And only one month?
Mr. Spock: Exactly, Yeoman. Evidently, through some miscalculation, this virus annihilated the entire adult population in a very short period, leaving only the children.
Yeoman Rand: But that means these children...
Mr. Spock: ...could very well be immensely old.
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References The Andy Griffith Show (1960) See more »


Theme From Star Trek
Written by Alexander Courage
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User Reviews

18 May 2013 | by (Buffalo, New York) – See all my reviews

Kim Darby and Michael J. Pollard guest star in this Star Trek prime episode where Darby is in the title role. They are 300 year old children on this planet, a handful of survivors whose growth has been slowed, but not halted. When they reach puberty they will die of the same plague that their parents did.

When the Star Trek away team beams down, they all with the exception of Leonard Nimoy due to his Vulcan anatomy all start coming down with what killed the inhabitants.

William Shatner has an interesting problem, the only ones who can help are the kids, but they are children and reason like children. But Darby is entering puberty, we know because she finds the grown up captain of the Enterprise attractive.

By the way the Enterprise away team are referred to as 'Grups' a slang contraction for grownups. And Grups are the enemy of kids.

An interesting episode to say the least.

1 of 3 people found this review helpful.  Was this review helpful to you?

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