3-04: And the Children Shall Lead
The Enterprise rescues a group of children, the only survivors of a Federation outpost, who are being controlled by an alien being.
3-01: Spock’s Brain
Kirk and McCoy seek out to find Spock’s stolen brain before his body succumbs.
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.
3-02: The Enterprise Incident
The Enterprise is intercepted after an apparently fatigued Kirk crosses the Romulan Neutral Zone.