The Enterprise goes into orbit around a planet that strongly
resembles Earth. Beaming down, Kirk and company discover that
there are no adults on the planet, only children.
It turns out that the planet's adults tried to create a vaccine
to prevent aging. The result was a disease that killed all the
adults. Soon after beaming down, Kirk and the rest of the landing
party, (except for Spock) contract the same ailment. Miri, a
young girl from the planet, falls for Kirk. McCoy works desperately
to develop an antidote for the disease.
Kirk and the landing party are endangered by the children. McCoy
perfects an antidote for the planet's disease, saving the day.
The Naked Time,
The Deadly Years,
This Side of Paradise