"Star Trek" All Our Yesterdays (TV Episode 1969) - Plot Summary Poster

(TV Series)


Plot Summary

  • When the planet Sarpeidon is about to be destroyed by its star Beta Niobe becoming a supernova, Kirk, Spock and McCoy beam down and find it evacuated except for Atoz, its librarian, tending with his replicas a collection of unusual discs, which play the planet's history and (to their surprise) allow their users to travel into the past trough the atavachron, a time machine, into the periods each was studying on disc, but they jump in unprepared. McCoy and Spock find themselves locked in a planetary ice age 5,000 years ago, where Spock reverts to the barbaric age of the Vulcans, hence touchy and intensely attracted to the political exilee Zarabeth, who enjoys getting company but tells them return is impossible. Kirk lands in a Cromwellian period, where he's arrested and suspected of witchcraft, but realizes the magistrate must be a time traveler like him, and learns not being prepared at molecular level he can return through the time portal, and in fact must do so and contact Spock and Bones in a matter of hours; they must all return to the present and board the Enterprise before the exploding sun destroys the atavachron.

    - Written by KGF Vissers
  • Kirk, McCoy and Spock beam down to the planet Sarpeidon to learn what has happened to its population. The planet, which will be completely destroyed when its sun goes super nova in a few hours time, once had a thriving population but has now been reduced to one person, the Librarian Mr. Atoz. It would appear that the planet's entire population has gone back in time to a period of their choice in the planet's history. When the three crewman unknowingly go through the time portal, Kirk ends up in a society similar to 17th century Earth while Kirk and McCoy end up in a frozen ice age. With Kirk arrested and accused of witchcraft and the others having to survive the harsh Arctic-like climate, they have only a short time to find their way back and get to the Enterprise before the planet explodes. For Mr. Spock, he finds a time from before the existence of Vulcan and he is regressing to an emotional state.

    - Written by garykmcd
  • Mere hours before Beta Niobe goes supernova, Kirk, Spock and McCoy beam down to its sole satellite, Sarpeidon, a class M planet, whose large population, incapable of space flight, has, nonetheless, completely vanished. Only one active power source remains - a records archive manned by a lone librarian named Atoz along with several replicas of himself. By accident, Kirk and party run headlong into the planet's secret - a time machine through which the doomed population escaped into its own past. Unfortunately, Kirk gets stuck in its Reformation era, arrested for witchcraft, while Spock and McCoy find rescue from freezing in the planet's ice age through a political prisoner condemned to live alone. Not only have these involuntary travelers just hours to return to the enterprise before the planet's destruction, but their lack of due process by the library's atavachron will cause their deaths on a cellular level if they don't return. Hardest hit of all is Spock, who, without the proper preparation, has reverted back to the barbaric behavior of his ancestors.

    - Written by statmanjeff
  • In Star Trek's penultimate episode, Kirk, Spock, and McCoy find themselves transporting down to the planet Sarpeidon to investigate (and possibly aid) a planet's evacuation before its sun can go nova. All they find, however, is a single librarian, Mr Atoz, tending a collection of unusual discs, which play the planet's history and (to their surprise) allow their users to travel into the past. McCoy and Spock find themselves locked in the planet's ice age; Kirk in the planet's colonial age; and they must escape back into the present before the sun explodes, and the library's computer is destroyed. To complicate things, Spock finds himself attracted to a beautiful political prisoner named Zarabeth.

    - Written by JW Kearse
  • When Kirk, Spock, and McCoy investigate the disappearance of a doomed planet's population, they find themselves trapped in different periods of that world's past.

    - Written by Kenneth Chisholm


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