3-23: All Our Yesterdays
On the eve of a world's complete destruction, Kirk, Spock, and McCoy become trapped in the planet’s distant past.
3-21: The Cloud Minders
The Enterprise travels to planet whose affluent lives in a cloud city, isolated from the horrific lifestyle of those below.
3-03: The Paradise Syndrome
When Kirk’s mind is wiped from an alien obelisk, he is taken in by a primitive community who believe he may be a god.