| Stardate 4385.3. The U.S.S. Enterprise makes first contact with the Melkot, an alien race possessing unusual telepathic powers. After an initial period of uneasiness, Kirk persuades the Melkot of the Federation's peaceful intentions. The Melkot agree to diplomatic relations with the Federation. |
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Stardate 4372.5. The Enterprise is on a diplomatic mission to the Tellun system. Assignment is to transport Elaan, the Dohlman of planet Elas, to planet Troyius as part of a peace agreement between the two warring planets. The mission is complicated by interference from Klingon interests, apparently trying to protect Klingon access to rich dilithium deposits on Troyius. Editors' Note: This episode marks the first time the Klingon battle cruiser was actually used. Earlier episodes referred to this vessel, but this is the first episode that actually showed it onscreen. (In the original network airings of these episodes, 'The Enterprise Incident' [TOS] actually aired before 'Elaan of Troyius' [TOS], so the first time the audience saw the Klingon battle cruiser, it was flown by Romulans.) |
| Stardate 4842.6. Captain Kirk is missing from a landing party investigating the inhabitants of a Class-M planet threatened with collision from an asteroid. Search for Kirk is cut short so that U.S.S. Enterprise can intercept asteroid to divert it from collision. This attempt fails, resulting in severe damage to Enterprise warp drive systems. Enterprise returns to search for Kirk, who has suffered an injury resulting in memory loss. Eventually Spock discovers evidence of an ancient deflector device which is successfully employed to divert the asteroid. It is learned that Kirk, while suffering from amnesia, had married a native woman named Miramanee, who was subsequently killed in a local power struggle. |
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Stardate 5027.3. The U.S.S. Enterprise crosses the Romulan Neutral Zone in violation of treaty, and is captured by three Romulan battle cruisers. Captain Kirk and Commander Spock are taken into Romulan custody and accused of criminal espionage by a Romulan commander. They later escape, stealing an improved Romulan cloaking device. The Enterprise flees from Romulan space, and it is learned that Kirk and Spock have been conducting a covert Starfleet mission intended to gain military intelligence about the improved cloaking device. During their escape, the Romulan commander is taken prisoner aboard the Enterprise. Editors' Note: The original reason for the Klingon-Romulan alliance in Star Trek's third season was to 'explain' why the Romulans were using Klingon battle cruisers. The real reason for this was that the show had just made a major investment in designing and building the new Klingon ship. Establishing an alliance between the two adversaries created a reason to show more of the nifty new model. That ship was seen three times during the run of the original series, and the basic design was also used in the Star Trek features and in Star Trek: The Next Generation. This episode suggests Spock had been in Starfleet for 18 years, implying that he had joined in 2250, although 'Journey to Babel' (TOS) puts his entry into Starfleet at 2249. The capture of the Romulan cloaking device at this relatively early point in Star Trek history raises the question of why the Enterprise and other Starfleet vessels have never incorporated the invisibility screen into their standard equipment. One theory advanced by Gene Roddenberry suggested that the men and women of the Federation Starfleet are explorers and scientists, so they 'don't sneak around'. One could therefore assume that Federation policy prohibits the use of cloaking devices in what is primarily a nonmilitary fleet. The matter was eventually resolved by the episode 'The Pegasus' (TNG) which established that under the Treaty of Algeron, the Federation agreed not to develop or use cloaking technologies. The Romulan commander is turned over to Federation authorities. After 'The Enterprise Incident' (TOS). |
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Stardate 5029.5. The Enterprise, at planet Triacus, discovers all adult members of Starnes expedition to be dead. Surviving children show uncharacteristically little emotional impact from the tragedy. They are later discovered to be under the psychic influence of a noncorporeal being which calls itself the 'Gorgan', apparently the source of legends of ancient marauders from Triacus. This entity attempts to gain control of the Enterprise, using the children as agents. Enterprise personnel help the children face their grief, thus freeing them from the Gorgan. The survivors of the Starnes expedition tragedy on planet Triacus are taken to Starbase 4. After 'And the Children Shall Lead' (TOS). |
| Stardate 5431.4. U.S.S. Enterprise, traveling near the Sigma Draconis system, is attacked by a spacecraft from a previously unknown civilization in that system. The only casualty is Commander Spock, whose brain is surgically removed by the attacker. The Enterprise pursues the spacecraft to Sigma Draconis VI, where it is discovered that Spock's brain is being used as a vital component in a massive computer system that provides for the planet's inhabitants. Captain Kirk leads a landing party to the planet and is successful in retrieving the brain. Dr. McCoy makes use of the planetary computer's advanced knowledge to learn surgical techniques necessary to restore the brain to Spock's body. Finally, Enterprise personnel encourage the planet's inhabitants to learn survival without dependence on the computer system. |
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Stardate 5630.7. The U.S.S. Enterprise is assigned to transport diplomatic and cultural exchange party to rendezvous with Medusan spacecraft. Among the party is Medusan Ambassador Kollos, Dr. Miranda Jones, and technical specialist Lawrence Marvick. Emotional stress, exacerbated by direct visual contact with Kollos, causes Marvick to exhibit irrational behavior, at which time he pilots the Enterprise across the energy barrier at the edge of the galaxy. The hazardous return trip is made possible by the navigational expertise of Ambassador Kollos. Shortly thereafter, Jones establishes a mind link with Kollos. Editors' Note: Lawrence Marvick is described as being one of the designers of the Enterprise. |
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Stardate 5121.5. The U.S.S. Enterprise on a mission to rescue personnel at the research station on planet Minara II before that planet's star goes nova. Enterprise landing party discovers all station personnel missing. Further investigation reveals station personnel to be dead, part of a bizarre experiment by beings called Vians, who are attempting to determine the worthiness of the planet's inhabitants to be rescued. The star Minara explodes. Just after 'The Empath' (TOS). |
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Stardate 5693.2. The U.S.S. Enterprise investigates the disappearance of the Starship Defiant in uncharted territory, locates the Defiant and discovers evidence of severe violence that resulted in the death of all Defiant personnel. This behavior is determined to be the result of distortions to the central nervous system caused by a spatial phenomenon called interphase, a temporary overlap of two universes. The interphase phenomenon is also found responsible for the literal disappearance of the Defiant and for the loss of Enterprise captain James Kirk. Efforts to rescue Kirk from interspace are hampered by a severe energy drain on Enterprise systems by the interphase phenomenon, and by mental and behavioral disorders in Enterprise personnel, also caused by interphase. The rescue is further complicated by a previously unknown territorial claim on the area by Commander Loskene, representing the Tholian Assembly, although Kirk is successfully recovered before the Tholians can take decisive action against the Enterprise. Editors' Note: This is the only encounter we've seen with the Tholians, although several Next Generation episodes have referred to an ongoing conflict between the Federation and the Tholian Assembly. Spock's line about 'the renowned Tholian punctuality' suggests the Federation had prior contact with the Tholians. Spock also notes that there is no record of a starship's crew ever having mutinied, although the episode 'Whom Gods Destroy' (filmed after 'The Tholian Web') establishes that Garth's crew mutinied some time ago when he ordered them to kill the inhabitants of planet Antos IV. Garth may have been exaggerating, of course. Dr. Leonard McCoy is diagnosed as having xeno-polycythemia, a rare blood disorder for which there is no known cure. His condition is terminal. Just prior to 'For the World Is Hollow and I Have Touched the Sky' (TOS). |
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Stardate 5476.3. The Enterprise successfully deflects an attack by technically unsophisticated missile weapons. Investigation reveals the origin of the attack to be an asteroid traveling under power as an inhabited sublight space vehicle. Course projections indicate the asteroid will impact planet Daran V in a little over a year, threatening the lives of the 3.7 million people on that world. Transporting to the asteroid ship, Captain James Kirk, Mr. Spock, and Dr. McCoy determine the ship, called Yonada, to have been built by inhabitants of the Fabrina system just prior to the explosion of their sun some 10,000 years ago. The boarding party is unsuccessful in gaining the cooperation of local authorities, but Dr. McCoy, suffering from terminal xeno-polycythemia, elects to remain behind for personal reasons when Kirk and Spock return to the Enterprise. McCoy, having married Yonadan high priestess Natira, discovers documentation revealing technical schematics for the vehicle. Using this information, Enterprise personnel are successful in restoring Yonada to its intended flight path, averting the feared collision with Daran V. Also discovered among the Yonadan records is a cure for xeno-polycythemia, permitting Dr. McCoy to return to duty aboard the Enterprise. The U.S.S. Enterprise receives a distress call from a colony on planet Beta XIIA. It is not realized at the time that the signal has been fabricated by an alien life-form, and that a Klingon battle cruiser under the command of Kang has received a similarly falsified distress call. Just prior to 'Day of the Dove' (TOS). |
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(No stardate given.) A U.S.S. Enterprise landing party at planet Beta XIIA discovers the distress call to have been a ruse, apparently a trick by a Klingon battle cruiser also orbiting the planet. Enterprise personnel, avoiding capture by a Klingon landing party, are successful in taking the Klingons captive aboard the Enterprise. Dangerous radiation emissions are detected aboard the Klingon vessel, and the ship is destroyed by the Enterprise to avoid further hazard. Aboard the Enterprise, intense fighting breaks out between Enterprise and Klingon personnel. The situation (including the falsified distress calls) is eventually learned to have been engineered by a previously unknown energy-based life-form that thrives on the emotions of hatred and anger. Enterprise and Klingon personnel cooperate to drive this life-form away by generating positive emotions. Editors' Note: Actor Michael Ansara returned to Star Trek nearly 30 years after 'Day of the Dove' (TOS) was filmed to play Kang again in 'Blood Oath' (DS9). |
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Stardate 5784.2. The Enterprise responds to a distress call from a previously unknown civilization. The inhabitants of this planet are discovered to have escaped nearly three millennia ago from the Sahndara star system, just before Sahndara went nova. They had stopped for a time on ancient Earth, where their leader, Parmen, had developed a great admiration for the philosopher Plato. Later, having settled on a planet they named Platonius, these unusually long-lived humanoids had attempted to recreate Plato's Republic. At Platonius, Enterprise Chief Medical Officer Dr. Leonard McCoy declines an invitation to remain behind with the Platonians. Although the Platonians attempt to coerce McCoy to stay by using their unusual telekinetic powers, McCoy is successful in making use of local kironide chemical deposits to create similar telekinetic powers in Enterprise personnel, permitting their escape. One Platonian, Alexander, who had helped the Enterprise people, expresses a desire to leave Platonius, and is welcomed as a guest aboard the Enterprise. Captain Kirk informs Starfleet Command of the Platonians and of their unusual telekinetic powers, advising other starships to take appropriate precautions before making contact with that planet. Just after 'Plato's Stepchildren' (TOS). |
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Stardate 5710.5. The U.S.S. Enterprise responds to distress calls from planet Scalos. A landing party discovers evidence of a technically advanced humanoid civilization, but no immediately apparent life-forms. Upon the landing party's return to the Enterprise, a number of unexplained malfunctions are traced to the presence of previously undetected humanoid life-forms from the planet. It is learned that these humanoids are the victims of a terrible volcanic disaster which hyperaccelerated the Scalosians so that they live their lives at a much faster rate than normal. Scalosian queen Deela further reveals that their purpose in attempting to control the Enterprise crew is to provide breeding stock for the genetically damaged Scalosians, although the acceleration process is learned to be fatal to humans. Enterprise personnel are successful in preventing the takeover, in the process developing a counteragent to reverse the hyperacceleration effect. |
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(No stardate given.) The Starship Enterprise investigates an anomalous planet whose apparent geologic age is much less than the indigenous vegetation would indicate. Landing party discovers evidence of significant geologic instability, although this investigation is interrupted when the Enterprise is discovered to be missing from planet orbit. The ship is later found to have been transposed across some 990.7 light-years from the planet, apparently by the same agency responsible for the geologic instability. This agency is found to be the image of a woman named Losira, who was the last surviving member of a Kalandan colony there. The planet itself is learned to be an artificial construct, the product of Kalandan technology. The image of Losira was used by the colony's still-functioning computer to defend the installation despite the fact that all colonists had been killed some years prior by disease. Editors' Note: This episode featured the second appearance of Dr. M'Benga to the Enterprise sickbay. M'Benga had been previously seen in 'A Private Little War' (TOS). A shuttlecraft is stolen from Starbase 4. It is later learned that the vehicle was taken by Lokai, a fugitive from the planet Cheron. Two weeks prior to 'Let That Be Your Last Battlefield' (TOS). A planetwide bacterial infection threatens life on planet Ariannus, a vital transfer point on commercial space lanes. The U.S.S. Enterprise is assigned to perform decontamination employing an orbital spraying technique. Just prior to 'Let That Be Your Last Battlefield' (TOS). |
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Stardate 5730.2. En route for planet Ariannus for decontamination mission, the U.S.S. Enterprise intercepts and recovers a shuttlecraft that had been stolen from Starbase 4, found to be piloted by Lokai from the planet Cheron. Shortly thereafter, a second ship intercepts the Enterprise. The pilot of the second ship, Commissioner Bele of the planet Cheron, reports that he has been in pursuit of Lokai for crimes against the Cheron government, and requests extradition of Lokai from Federation custody. Enterprise captain Kirk declines the request, citing the absence of an extradition treaty. Upon completion of decontamination at Ariannus, the Enterprise is coerced to return both Lokai and Bele to Cheron, where it is discovered that their home civilization had been completely destroyed by racial hatred. Editors' Note: The U.S.S. Enterprise destruct command sequence, used when Kirk tries to prevent Bele's takeover of his ship, was repeated almost word for word in the film Star Trek III: The Search for Spock. However, the destruct sequence for the Enterprise -D, first seen in '11001001', was different. |
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Stardate 5718.3. The U.S.S. Enterprise is assigned to deliver new medication to the penal colony on planet Elba II. One of the inmates, the former Captain Garth of Izar, is discovered to have taken over the colony, taking advantage of a cellular metamorphosis technique he had learned at Antos IV. In the process, Garth captures Enterprise captain Kirk and first officer Spock, and causes the death of an Orion inmate named Marta. Kirk and Spock are successful in restoring control to colony administrator Donald Corey, and early indications suggest that new treatment may be able to reverse the course of Garth's mental illness. The government of the planet Gideon agrees to limited diplomatic contact with Federation representatives. Previous attempts at establishing diplomatic relations had been stymied by Gideon's fierce tradition of isolationism. Gideon, reported to be a near paradise, is being considered for admission into the Federation. Prior to 'The Mark of Gideon' (TOS). |
| Stardate 5423.4. The Starship Enterprise, on a diplomatic mission to planet Gideon, reports Captain James Kirk missing while in transit to the planet's surface. Investigation determines Kirk to have been abducted by the Gideon council, an attempt by Gideon prime minister Hodin to use disease organisms in Kirk's bloodstream to help solve a serious overpopulation problem. Although Kirk declines to remain on Gideon to provide the disease organism, Hodin's daughter, Odona, becomes similarly infected and thus is able to fill the planet's needs. |
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Stardate 5725.3. The U.S.S. Enterprise is assigned to transport Lieutenant Mira Romaine to planetoid Memory Alpha, a massive archive for Federation cultural history and scientific knowledge. On final orbital approach to Memory Alpha, an energy phenomenon of unknown origin intercepts the Enterprise, resulting in serious neural impact on Romaine. This phenomenon subsequently attacks the Memory Alpha installation, resulting in the death of all station personnel. Enterprise personnel later determine that the energy is the embodiment of the survivors of the planet Zetar, destroyed many years ago. The survivors found Romaine to be a compatible life-form to serve as their corporeal body, but Enterprise personnel are successful in expelling the Zetar life-forms when it is found that they threaten Romaine's identity. Lieutenant Mira Romaine returns to Memory Alpha to help rebuild the facility. After 'The Lights of Zetar' (TOS). A botanical plague threatens the vegetation on planet Merak II. The plague's devastation is expected to leave the planet's surface uninhabitable. The only known treatment requires quantities of the rare mineral zenite. Prior to 'The Cloud Minders' (TOS). |
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Stardate 5818.4. The U.S.S. Enterprise is on an emergency assignment to obtain mineral zenite from miners on planet Ardana. Delivery of the zenite is delayed by terrorist activity. Investigation reveals the terrorists to be driven by severe social inequities between the working class, living in the underground mines, and the upper class, living in Stratos, a cloud city. Stratos authorities defend the arrangement, citing evidence that the workers exhibit lower intelligence, but it is learned this mental impairment is due to environmental conditions. Enterprise captain Kirk negotiates with both parties for improved working conditions in exchange for delivery of the zenite consignment. The Starship Enterprise proceeds to planet Merak II to deliver the zenite for treatment of the botanical plague. Just after 'The Cloud Minders' (TOS). |
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Stardate 5832.3. The Enterprise locates the space cruiser Aurora, reported stolen. Intercepting the Aurora, the Enterprise takes into custody several individuals led by Dr. Severin, a noted scientist. Severin reveals he is on a quest to find the mythical planet that is the source of the legends of Eden. Severin coerces ship's personnel to locate a planet matching his criteria, using ship's computer banks to correlate astronomical data. Severin then orders the Enterprise to those coordinates. At Severin's planet it is learned that although beautiful, the planet's environment is severely toxic to humanoid life, and Severin is killed from exposure to the planet's flora. Captain Kirk recommends that no legal action be taken against the remaining members of Severin's party. Editors' Note: An earlier version of this story was written by Dorothy Fontana under the title 'Joanna'. The Irina character (Chekov's love interest in the aired episode) was originally Dr. McCoy's daughter, Joanna, who caught the interest of Captain Kirk in Fontana's version. A serious epidemic of Rigelian fever breaks out onboard the Starship Enterprise, causing the death of three crew members and threatening the lives of 23 others. The effects of Rigelian fever resemble those of bubonic plague, killing its victims in a day. The Enterprise diverts to planet Holberg 917-G in the Omega system in order to obtain sufficient quantities of ryetalyn necessary for treatment of the epidemic. Just prior to 'Requiem for Methuselah' (TOS). |
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Stardate 5843.7. An Enterprise landing party attempts to gather raw ryetalyn from the surface of Holberg 917-G, a class-M planet previously believed to be uninhabited. The ryetalyn is critically needed as an antidote to Rigelian fever, now threatening the lives of the entire Enterprise crew. The planet is discovered to be the abode of a reclusive individual known as Flint, who is later discovered to be a nearly immortal man, originally from Earth. Flint offers assistance in obtaining and refining the ryetalyn, but is later learned to be deliberately detaining the landing party personnel to provide experience with human interaction to a sophisticated android of Flint's construction. The android, designed as a human female called Rayna Kapec, proves incapable of withstanding the stresses of human emotions and suffers a total systems failure. Flint, who is learned to have had many identities over his lifetime, claims to have been Leonardo da Vinci, Reginald Pollack, Sten from Marcus II, Brahms, Alexander, Merlin, Solomon, Lazarus, Abramson, and other historical figures. Flint ultimately provides refined ryetalyn for the successful treatment of the Enterprise crew, and is further discovered to have sacrificed immortality when he left Earth's ecosystems, but indicates a desire to devote the remainder of his life to improving the human condition. Editors' Note: Rayna Kapec was apparently named for Karel Capek, the Czechoslovakian writer who first coined the term 'robot' in his short story 'R.U.R.' The spelling of the medication 'ryetalyn' is indicated in the script as 'vrietalyn'. |
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Stardate 5906.4. The U.S.S. Enterprise conducts scientific studies in orbit around planet Excalbia and encounters a life-form claiming to be the late President Abraham Lincoln of Earth. Captain Kirk, intrigued by the nearly perfect image of the historical figure, accepts an invitation to transport to the surface of Excalbia with Spock, where similar recreations of numerous other historical figures are encountered. Among these recreations are Surak of Vulcan, Colonel Green of Earth, and Kahless the Unforgettable from the Klingon Homeworld. The Enterprise crew discovers the entire situation to have been engineered by the inhabitants of Excalbia, so that they may observe and learn about the concepts of 'good' and 'evil'. Upon completion of the drama, the Excalbians return Kirk and Spock to the Enterprise. Editors' Note: In 'Reunion' (TNG) and 'New Ground' (TNG), Worf tells Alexander about Kahless the Unforgettable, the leader who united the Klingon Homeworld, describing how Kahless fought his brother Morath for twelve days and nights because Morath had broken his word. A sculpture in Worf's quarters of two figures wrestling depicts this heroic struggle. More bits of the legend of Kahless were told in 'Birthright Part I & II' (TNG), and we actually met a clone of Kahless in 'Rightful Heir' (TNG). Oddly enough, Kahless in 'The Savage Curtain' (TOS) looked nothing like Kahless as seen in 'Rightful Heir'. |
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Stardate 5943.7. The U.S.S. Enterprise investigates planet Sarpeidon, hours before the predicted explosion of its star, Beta Niobe. Although earlier reports indicated Sarpeidon had been inhabited by a civilized humanoid species, sensors indicate no inhabitants remain. Investigation reveals a sophisticated time portal called the atavachron, which was used by the inhabitants to escape into their planet's past. Unfamiliarity with the atavachron results in the accidental transport of Captain Kirk, Mr. Spock, and Dr. McCoy to various points in Sarpeidon's past, although all three are recovered by Mr. Atoz, the atavachron operator. Atoz subsequently escapes into his chosen past time, and the Enterprise departs Sarpeidon just prior to the explosion of Beta Niobe. The U.S.S. Enterprise receives a distress call from a Federation archaeological team investigating the ruins on planet Camus II. The ship, on course to rendezvous with the Starship Potemkin at Beta Aurigae for gravitational studies, diverts to Camus II. Just prior to 'Turnabout Intruder' (TOS). |
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Stardate 5928.5. The Starship Enterprise conducts a rescue mission at Camus II, aiding survivors of the Federation archaeological team suffering from a serious radiation exposure accident. Upon returning to the ship, Enterprise captain James Kirk is discovered to be exhibiting severely aberrant behavior, resulting in the convening of a hearing to evaluate Kirk's command competency. Investigation reveals the fact that Kirk, while on Camus II, had been the victim of an abduction by Dr. Janice Lester, a member of the archaeological team. Lester had evidently employed an ancient device discovered in the ruins to transfer her consciousness into the body of James Kirk, and Kirk's consciousness into Lester's body. This mental exchange by the emotionally unstable Lester is determined to be the cause of Kirk's irrational behavior, although the transference is later found to be temporary, and both Kirk and Lester revert to their original bodies. Lester is placed in the medical care of former archaeological expedition leader Dr. Coleman. Editors' Note: Starfleet has been accused of sexism because of Janice's speech to Kirk complaining that 'your world of starship captains doesn't admit women'. While it is indeed possible that Starfleet did not have female captains at this point (chronologically, the first female captain we saw was the commander of the U.S.S. Saratoga in Star Trek IV: The Voyage Home), we chose to interpret Janice's line as meaning that Kirk's personal world, revolving around his career as starship captain, left no room for a lasting commitment to a woman. (Gene Roddenberry apparently disagreed with this rationalization, admitting in later years that the line was simply sexist.) 'Turnabout Intruder' (TOS) was the last episode of the original Star Trek television series. The U.S.S. Enterprise goes to Starbase 2. Just after 'Turnabout Intruder' (TOS). Kirk's five-year mission ends and the Starship Enterprise returns to spacedock. Date is conjecture. Assumes the pilot episode 'Where No Man Has Gone Before' (TOS) was about a year into the five-year mission and that the first season was about a year after that episode. |
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