Episodes

1. 

   Episode

   Episode 26: Assignment Earth

   Sent back in time to find out how Earth managed to survive without destroying itself, the U.S.S. Enterprise inadvertently beams aboard a space traveler, Gary Seven, along with his black cat, Isis. Seven claims to be a 20th-century human raised and trained by unknown and unnamed aliens to prevent Earth from destroying itself. Before Kirk can determine whether or not the man is telling the truth, Seven escapes to the planet below. Kirk and Spock follow him to Earth. Meanwhile, Seven has tried to contact two fellow agents, who are discovered to have recently died in an auto accident. Instead, he contacts Roberta Lincoln, who becomes his reluctant cohort.

2. 

   Episode

   Episode 25: Bread and Circuses

   The U.S.S. Enterprise finds the wreckage of the S.S. Beagle, with no survivors, orbiting near the Planet 892-IV. When Kirk, Spock, and McCoy beam to the planet's surface, they find a disheveled group of "sun worshipers" trying to escape being caught by the local authorities. They are captured, along with the landing party, and taken to the city which looks very much like Earth's ancient Rome.

3. 

   Episode

   Episode 24: The Ultimate Computer

   The U.S.S. Enterprise is chosen to be the test ship for the new M-5 multitronic computer system, a computer meant to be able to run a starship without human intervention. Also aboard for the test is Dr. Richard Daystrom, the inventor of the M-5 and an obsessive and unstable individual.

4. 

   Episode

   Episode 23: The Omega Glory

   The U.S.S. Enterprise finds a crewless starship, the U.S.S. Exeter, in orbit around the planet Omega IV. The boarding party from the U.S.S. Enterprise contracts a virus that may have killed the Exeter's crew, but the biosphere on Omega IV is found to contain an immunity. The party is beamed to the surface.

5. 

   Episode

   Episode 22: By Any Other Name

   When the U.S.S. Enterprise answers a distress call from a small planet, the landing party is captured by a group of agents from the Kelvan empire, located in the distant Andromeda galaxy. The Kelvans' purpose is to find planets suitable for colonization. However, their own ship was destroyed and now they need the Enterprise to make the 300-year journey home. To utilize the starship, the Kelvans -- huge, tentacled creatures -- take on human form. After several attempts at escape, Kirk accepts his fate and agrees to let the aliens take over his ship. The Kelvans use their technology to transform all but essential Enterprise personnel into small "cubes" which, unless broken or damaged, can be restored to human beings.

6. 

   Episode

   Episode 21: Patterns of Force

   The U.S.S. Enterprise is sent to planet Ekos to investigate the disappearance of an old Academy professor of Kirk's -- historian John Gill. The Enterprise is attacked by an armed probe with a thermonuclear warhead, technology that is too advanced to be from Ekos or the nearby Zeon. Captain Kirk destroys the probe before it can do any damage, then takes the ship into orbit around Ekos out of range of the planet's detection devices. Spock tells him that, according to their records, the Ekosians are primitive, warlike people in a state of anarchy; Zeon has a relatively high level of technology, and its people are peaceful.

7. 

   Episode

   Episode 20: Return to Tomorrow

   The U.S.S. Enterprise tracks a mysterious SOS to an ancient planet presumed long dead. The crew hears a voice from a telepathic being named Sargon, who asks Kirk to beam down to the surface. When Kirk, Spock and McCoy arrive in the transporter room, they find that Dr. Ann Mulhall has also been summoned. Sargon operates the transporter and leaves the security guards behind.

8. 

   Episode

   Episode 19: A Private Litte War

   Captain Kirk leads a survey mission to a peaceful, primitive planet which he visited 13 years before as a lieutenant. He is dismayed to see a group of villagers armed with flintlocks, weapons they shouldn't have at their current stage of development. The villagers ambush the landing party and wound Spock. Returning to the U.S.S. Enterprise, Spock is put under the care of Dr. M'Benga, who once interned in a Vulcan ward. M'Benga tells McCoy they've done all they can for Spock, and that he has to recover on his own.

9. 

   Episode

   Episode 18: The Immunity Syndrome

   The U.S.S. Enterprise is en route to Starbase 6 for shore leave when Uhura receives a jumbled message from which all she can make out is a sector coordinate and the name U.S.S. Intrepid, a starship manned entirely by Vulcans. Suddenly, Spock shudders with pain and reports that the Intrepid just "died." Kirk gets orders to head to Sector 39J because all contact has been lost with solar system Gamma 7A and with the Intrepid, which was investigating it. As the Enterprise changes course, long-range sensors show that the solar system, and its billions of people, are dead.

10. 

    Episode

    Episode 17: A Piece of the Action

    The planet Sigma Iotia II's last visit by the Federation was by the U.S.S. Horizon ... a hundred years before. Realizing the lapse in monitoring the planet, the Federation sends the U.S.S. Enterprise to observe the progress of Iotia's population.

11. 

    Episode

    Episode 16: The Gamesters of Triskelion

    During a routine transport to a planet, Captain Kirk, Lieutenant Uhura and Ensign Chekov are intercepted and abducted by a powerful and distant transporter beam. Arriving, literally, flat on their backs on a planet called Triskelion in the M-24 Alpha star system, the are immediately attacked by beings from several different species, each of them wearing a collar around their necks.

12. 

    Episode

    Episode 15: The Trouble With Tribbles

    When the U.S.S. Enterprise receives a top-priority order to protect a shipment of quadrotriticale grain on Deep Space Station K-7, Kirk is irritated to be guarding a shipment of "wheat." But the shipment is meant for famine-struck Sherman's Planet, and Klingons are taking shore leave on the space station. Adding to Kirk's irritation is Federation Undersecretary for Agriculture, Nilz Baris, and his pesty assistant, Arne Darvin, who inform Kirk that Starfleet Command is afraid the Klingons may try to steal the grain.

13. 

    Episode

    Episode 14: Wolf in the Fold

    Kirk and McCoy decide to take Scotty, who is recovering from a head wound accidentally caused by a female crew member, to a nightclub on the planet Argelius II. Scotty becomes infatuated with a lovely dancer at the club and they leave together. In the meantime, Kirk and McCoy decide to sample some of the planet's other pleasures and leave.

14. 

    Episode

    Episode 13: Obsession

    Eleven years ago, the U.S.S. Farragut encountered a deadly cloud creature with vampire-like tendencies. James T. Kirk was on board the Farragut at that time as they entered the region of Tycho IV. The creature killed the ship's commander, Captain Garrovick, and half the crew by draining their red blood cells. To this day, Kirk feels guilt at having hesitated before firing at the creature...even though his phaser blast had no effect.

15. 

    Episode

    Episode 12: The Deadly Years

    On the way to Starbase 10, the U.S.S. Enterprise stops to deliver supplies to the colonists of Gamma Hydra IV. A landing party consisting of Kirk, Spock, McCoy, Scott, Lieutenant Galway and Chekov beam to the planet's surface. They find that accelerated aging has taken place, killing most of the colonists. Chekov is terrified when he discovers the first body. The only survivors, an elderly couple who claim to be in their twenties, die shortly after meeting the Enterprise crew. When the landing party returns to the Enterprise, the aging acceleration begins to affect each of them... except Chekov, who remains curiously immune. While Kirk wants to stay in orbit around Gamma Hydra IV until a cure can be found, one of his passengers, Commodore Stocker, wants to proceed to Starbase 10 where he feels the best medical aid can be obtained.

16. 

    Episode

    Episode 11: Friday's Child

    Sent to the planet Capella IV to negotiate a mining treaty, Kirk and a party beam to the surface. They find the Capellans to be warlike and tradition-bound people. Kirk also finds that a Klingon agent, Kras, has gotten there before them and established an agreement with some of the planet's rebels who kill their leader, Akaar, and take over. Akaar's widow, Eleen, is willing to forfeit her life, as custom demands, because she carries the child that will be the next leader, or Teer.

17. 

    Episode

    Episode 10: Journey to Babel

    The U.S.S. Enterprise is appointed to transport ambassadors from many worlds to the Babel Conferences. Among those aboard are Ambassador Sarek of Vulcan and his human wife, Amanda -- Spock's parents.

18. 

    Episode

    Episode 9: Metamorphosis

    Assistant Federation Commissioner Nancy Hedford has become ill while trying to stop a war on Epsilon Canaris III. The shuttlecraft Galileo is assigned to take her to the U.S.S. Enterprise, where she will receive treatment for the otherwise fatal Sakuro's disease.

19. 

    Episode

    Episode 8: I, Mudd

    Norman, an android pretending to be a member of the U.S.S. Enterprise crew, takes control of the starship and her crew, taking them to an unnamed planet where Kirk discovers an old nemesis ... Harry Mudd.

20. 

    Episode

    Episode 7: Catspaw

    On the planet Pyris VII, two beings known as Korob and Sylvia have been sent on a mission of conquest by their home world. Using a matter transmuter, they assume human form to welcome the U.S.S. Enterprise landing party. When one member of the initial landing party returns to the ship dead, Kirk, Spock and McCoy beam down to find Scotty and Sulu transformed into mindless zombies. Sylvia and Korob appear as witch and warlock and use scare tactics to keep the officers from investigating the planet and their motives. Kirk, Spock and McCoy are taken prisoner and shown examples of Korob and Sylvia's "powers," which includes heating a small model of the U.S.S. Enterprise over a flame and having the heat transfer to the orbiting ship.

21. 

    Episode

    Episode 6: The Doomsday Machine

    Sent to investigate the destruction of several planetary systems, the U.S.S. Enterprise discovers a crippled starship, the U.S.S. Constellation, floating in space. Commodore Matthew Decker is the only one left on the ship. Kirk and Scotty remain on board the Constellation to try and repair the starship, while McCoy beams Decker aboard the U.S.S. Enterprise.

22. 

    Episode

    Episode 5: The Apple

    When a landing party beams down to the planet Gamma Trianguli VI, they find what appears to be an idyllic paradise. They quickly discover, however, that the planet is deadly, sporting plants that shoot thorns, rocks that explode, and incredibly accurate lightning bolts.

23. 

    Episode

    Episode 4: Mirror, Mirror

    Caught in the beginnings of an ion storm, Kirk, McCoy and Uhura interrupt their negotiations with the Halkans for dilithium crystals, to return to the U.S.S. Enterprise. Scotty beams the landing party aboard as a burst from the storm hits the starship. The transporter malfunctions, sending Kirk, McCoy, Scotty and Uhura into an alternate universe. In this world, they soon discover the "Galactic Empire" is maintained by fear and assassination. Now, aboard the Imperial Starship Enterprise, the four must find a way to remain undetected until they can return to their own universe.

24. 

    Episode

    Episode 3: The Changeling

    The U.S.S. Enterprise is sent to investigate the destruction of the Malurian system and its four billion inhabitants. When it arrives at the coordinates, the starship itself is threatened by a space going, self-contained computer/probe calling itself Nomad. When Kirk identifies himself by name, Nomad mistakes him for "The Kirk," and thinks him to be his creator.

25. 

    Episode

    Episode 2: Who Mourns for Adonais?

    As the U.S.S. Enterprise nears the planet Pollux IV, a huge, green hand made of energy materializes in space, catching the U.S.S. Enterprise and holding it captive. Kirk and a landing party are transported to the planet's surface where they find a being who claims to be Apollo, the last of the Greek gods who dwelled on ancient Earth's Mount Olympus. All the other gods, Apollo tells Kirk, died of loneliness when they left their home of Mount Olympus. Apollo's plan for the U.S.S. Enterprise crew is that they settle on Pollux IV and worship their god, Apollo.

26. 

    Episode

    Episode 1: Amok Time

    When Spock begins to exhibit strange, erratic behavior, Kirk asks McCoy to conduct a medical examination. McCoy concludes that Spock is experiencing a potentially lethal internal distress.