When the planet Sarpeidon is about to be destroyed, by its star Beta Niobe becoming a supernova, Kirk (William Shatner), Spock (Leonard Nimoy) and McCoy (DeForest Kelley) beam down and find it evacuated except for its librarian, Mr. Atoz (Ian Wolfe), tending to his replicas. They are a collection of unusual discs, which play the planet's history and (to their surprise) allow their users to travel into the past through the atavachron, a time machine, into the periods each was studying on disc. The crew travels unprepared, McCoy and Spock find themselves locked in a frozen ice age 5,000 years ago, where Spock reverts to the barbaric age of the Vulcans. He becomes very easily agitated, and is intensely attracted to the political prisoner Zarabeth (Mariette Hartley), who enjoys getting company but tells them return is impossible. Kirk arrives in a Cromwellian period, where he's arrested and suspected of witchcraft. He soon realizes the magistrate must be a time traveler like him, and ...
Did You Know?
(Zarabeth) was not allowed to show her belly-button in this episode, despite the appearances of other women's navels in previous episodes. To comment on this censorship, Gene Roddenberry
gave Hartley's character two navels in his pilot Genesis II
(1973), stating that "the network owed me one." See more
When in the Ice Age period, Spock starts regressing at the level of his ancestors five thousand years earlier. However, McCoy does not. Behaviorally speaking, humans have remained relatively unchanged over the past 5,000 years, despite our technological advances. The Vulcan people were on the brink of oblivion not because of what they could do technologically, but who they were emotionally. Humans now are similar to humans at the beginning of the Bronze Age, regardless of our technological advances. See more
My home is a planet millions of light years away.
Oh, how wonderful! I've always loved books about such possibilities, but they are only stories. This isn't real. I must be imagining all this. I'm going mad.
Special Enhanced version Digitally Remastered with new exterior shots and remade opening theme song See more