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)
Security Guard #1 (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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Sound Mix:


Aspect Ratio:

1.33 : 1
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Did You Know?


This is the first episode to feature outdoor shooting after Star Trek: The Cage (1986), featuring the redressed exterior sets from The Andy Griffith Show (1960), which were located on the "40 Acres" backlot, property of Desilu studios at the time. Other episodes filmed at the "40 Acres" sets are Star Trek: The Return of the Archons (1967) and Star Trek: The City on the Edge of Forever (1967). 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 »


Yeoman Rand: Miri... she really loved you, you know?
Capt. Kirk: Yes.
Capt. Kirk: I never get involved with older women, Yeoman.
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References The Outer Limits: The Man Who Was Never Born (1963) See more »


Theme From Star Trek
Written by Alexander Courage
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Frequently Asked Questions

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User Reviews

Children Catch A Disease Entering Puberty
21 December 2016 | by (United States) – See all my reviews

Season 1, episode 8. The Enterprise gets a distress call from a planet that just like Earth in every way except the only people there are children. The crew that beamed to the planet and found out that all adults have died from a mysterious disease and upon puberty the children will catch the disease and die as well. The captain and crew have caught the disease and it spreads fast. This disease also makes an adult angry - causing arguments. Mr. Spock seems to be the only one immune but as he clearly states he's still a carrier and wants to get back to the ship. To make matters worse Miri is entering puberty and starts to have feelings for Kirk... she is also jealous over Janis Rand. She wants to help the captain and crew, to find a cure but she is scared and jealous. Can Kirk find the rest of the kids get their help along with Miri? Can Dr. McCoy find a cure before it's too late?

If you want to see some very bratty and crazy kids... then this episode is full of them. Rather interesting episode how it all plays out.


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