Colonists on a distant planet are taken over by alien organisms that control their hosts by inflicting pain. Things take a turn for the worse when Spock is infected by one of the organisms and even his Vulcan ability to control pain isn't sufficient to resist them. The Enterprise crew must come up with a means of destroying the organisms without hugging their human hosts.

Star Trek Season 1 Episodes...

• s01e01 - The Man Trap
• s01e02 - Charlie X
• s01e03 - Where No Man Has Gone Before
• s01e04 - The Naked Time
• s01e05 - The Enemy Within
• s01e06 - Mudd's Women
• s01e07 - What Are Little Girls Made Of?
• s01e08 - Miri
• s01e09 - Dagger of the Mind
• s01e10 - The Corbomite Maneuver
• s01e11 - The Menagerie Part I
• s01e12 - The Menagerie Part II
• s01e13 - The Conscience of the King
• s01e14 - Balance of Terror
• s01e15 - Shore Leave
• s01e16 - The Galileo Seven
• s01e17 - The Squire of Gothos
• s01e18 - Arena
• s01e19 - Tomorrow is Yesterday
• s01e20 - Court Martial
• s01e21 - The Return of the Archons
• s01e22 - Space Seed
• s01e23 - A Taste of Armageddon
• s01e24 - This Side of Paradise
• s01e25 - The Devil in the Dark
• s01e26 - Errand of Mercy
• s01e27 - The Alternative Factor
• s01e28 - The City on the Edge of Forever
• s01e29 - Operation - Annihilate!

Star Trek Show Summary

Star Trek chronicles the 23rd century adventures of the U.S.S. Enterprise, one of twelve state-of-the-art starships representing Starfleet, the exploration branch of the United Federation of Planets, an alliance of alien races including Earth, Vulcan, Tellar, and Andor.

Captain James T. Kirk, the youngest starship captain in the Fleet, commands the Enterprise with a combination of brashness, authority, and imagination. The half-Vulcan/half-human Mr. Spock serves as his extremely logical and efficient First Officer and Science Officer. The ship's chief medical officer is Dr. Leonard McCoy, who has supreme medical authority on the ship and tends to the physical and mental needs of the Enterprise's crew of approximately 430.

Other ranking crew members include: Montgomery Scott, a man dedicated to his ship engines but not adverse to a bit of shore leave; Hikaru Sulu, helmsman and a man of many hobbies ranging from botany to fencing, Nyota Uhura, the extremely competent head of Communications, and Pavel Chekov, brash young navigator with a fierce pride in his native Russia.