1-29: Operation: Annihilate!
A planet, home to Kirk's brother and nephew, is under attack by unique creatures.
2-23: The Omega Glory
The Exeter is found drifting in space, its crew dead from a mysterious disease, except its missing captain.
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.