Capt. James T. Kirk, First Officer Mr. Spock, Dr. McCoy and the rest of the Enterprise crew embark on a five-year mission of space exploration.

1. Pilot: The Cage 64m Capt. Pike is held prisoner and tested by aliens who have the power to project incredibly lifelike illusions.

2. The Man Trap 50m The crew is stalked by a shape-shifting creature that drains the salt from humans. When it is unintentionally brought aboard, Scotty faces a decision.

3. Charlie X 51m Powerful teenage psychic Charlie beams aboard. Although wanting to be liked, he attacks others until the secret of his powers are revealed to Kirk.

4. Where No Man Has Gone Before 51m As Kirk and Spock investigate a Starfleet tragedy, a friend of Kirk becomes endowed with godlike powers. To stop him, Kirk must hatch a risky plan.

5. The Naked Time 51m A virus causes the Enterprise crew to lose all self-control, as Sulu threatens the crew with a sword, Spock cries and Bones looks for an antidote.

6. The Enemy Within 50m The Enterprise transporter malfunctions and beams Kirk onboard with his evil doppelganger. Later, Kirk and his crew are stranded on a frigid planet.

7. Mudd's Women 50m Kirk and the crew rescue Harry Mudd and three "mail-order brides" from his matchmaking service. Mudd tries to stop Kirk from bringing him to justice.

8. What Are Little Girls Made Of? 51m The Enterprise's search for famous scientist Roger leads Kirk to a deserted planet where Roger, who lives with two lifelike androids, turns on Kirk.

9. Miri 50m The Enterprise arrives at a planet where a virus puts humans in a chronic childlike state. When Kirk and his team become victims, only Bones can help.

10. Dagger of the Mind 50m A deranged doctor escapes to the Enterprise from a planetary penal colony. As Kirk investigates, he is brainwashed by the colony's maniacal director.

11. The Corbomite Maneuver 50m The Enterprise narrowly escapes from imposing alien Balok's starship, but when Balok transmits a distress call, Kirk and the crew go to his aid.

12. The Menagerie: Part 1 49m Spock abducts the Enterprise's injured former captain and sets a course for a forbidden planet. Facing a court-martial, Spock refuses to back down.

13. The Menagerie: Part 2 50m During Spock's court-martial, video images of Capt. Pike's encounter with the psychic Talosians reveals Spock's motivation for hijacking the ship.

14. The Conscience of the King 50m Kodos, a fugitive mass murderer, is a 23rd-century Shakespearean actor. When a friend is murdered, Kirk asks a Shakespearean troupe to investigate.

15. Balance of Terror 50m After Romulan war birds destroy Federation outposts, the Enterprise pursues them. Similarities between them and Vulcans spark bigotry against Spock.

16. Shore Leave 51m The Enterprise lands at a picturesque planet for shore leave, but the idyll is ruined when a samurai and a bloodthirsty knight attack Sulu and Bones.

17. The Galileo Seven 50m Spock, Bones, Scotty and others crash-land on a planet where they're attacked by deadly giants. Spock risks their lives on a slim chance at a rescue.

18. The Squire of Gothos 51m When the Enterprise is captured on a planet ruled by a childish alien who is fascinated with Napoleon, Kirk offers his life for his crew's freedom.

19. Arena 51m Aliens abduct Kirk and a Gorn, a violent, lizard-like humanoid. To save their crews, Kirk and the Gorn must fight to the death, but Kirk refuses.

20. Tomorrow Is Yesterday 51m A black star sends the Enterprise back in time to 1960s Earth. Before they can turn back, Kirk and the crew must destroy all evidence of their visit.

21. Court Martial 50m After an officer is killed in a freak accident, computer records indicate Kirk is to blame. Evidence at a court-martial reveals that Kirk was framed.

22. The Return of the Archons 51m When the Enterprise travels to a planet where a Starfleet ship disappeared years ago, they find a tyrannical computer that rules its oppressed people.

23. Space Seed 50m The Enterprise encounters brutal super humans led by Khan Noonien Singh, who battles Kirk for control, turning a trusted colleague against Starfleet.

24. A Taste of Armageddon 51m Arriving at a planet where his crew members are slated to die, Kirk learns they're in a virtual war in which suicide is commited to avoid real combat.

25. This Side of Paradise 51m The Enterprise lands on a planet where everyone becomes very passive and affectionate toward one another. Kirk soon learns the cause.

26. The Devil in the Dark 50m When a monster kills several men at a mining colony, Kirk and Spock investigate. Spock learns the odd creature is intelligent, with a valid motive.

27. Errand of Mercy 50m Kirk tries to establish an outpost on a planet inhabited by seemingly primitive Organians. When Klingons attack, Organians show their true evolution.

28. The Alternative Factor 51m Kirk meets Lazarus, who claims he's chasing his parallel self through space and time and if Kirk doesn't help him, the entire multiverse is at risk.

29. The City on the Edge of Forever 50m Bones travels back to 1930s America and inadvertently destroys the future. To reverse the damage, Kirk and Spock also go back, and Kirk falls in love.