As Charles Evans, the lone survivor of a crashed
colonizing expedition to the planet Thasus, comes aboard the U.S.S. Enterprise
from the S.S. Antares, but when Captain Ramart of the Antares contacts Kirk
about Charlie, the S. S. Antares is suddenly destroyed.
shows not only a lack of grief for the people who had become
his benefactors, but almost an indifference to their deaths.
He seems only concerned that his new "family" like and accept
him. Unfortunately, teenage hormones and an isolated upbringing
make that difficult.
events occur whenever Charlie is angered — he makes Yeoman
Rand disappear when she rebuffs his advances, he breaks Spock's
legs when the Vulcan tries to discipline him, and he causes
injury and discomfort to anyone who he thinks is laughing at
demands that the U.S.S. Enterprise take him to the nearest
inhabited planet, but Kirk fears that his uncontrolled temper
and dangerous powers will create havoc for any civilization.
Charlie gains control of the ship, but Kirk shortly overcomes
him. Suddenly, an alien face appears on the bridge. It is that of
a Thasian, the race who raised Charlie and gave him his extremely
powerful psionic powers.
Thasians had realized that Charlie has left their planet
and thus sent their own starship to intercept the Enterprise.
Despite Charlie's tearful pleas to remain, the Thasians take
the lonely child back to Thasus. Before they depart, the beings
restore the U.S.S. Enterprise and her crew to normal.