After passing through an unusual energy field, the Enterprise computer develops a playful--and potentially lethal--personality.
Kirk leads a party to retrieve a religious relic that was stolen. However, he is faced with sabotage from within the group by someone who doesn't want the relic to be found, which will trigger an intergalactic jihad.moreless
While searching for a lost ship, Kirk, Spock, and McCoy are captured and placed in a zoo by advanced, telepathic aliens.
The Enterprise goes to the center of the galaxy, where they find a race of powerful aliens who once fled Earth.