For the crew of the USS Enterprise, our galaxy must seem a distinctly unfriendly place. This year, the Milky Way will be the victim of attacks by at least three planet-killing entities including a perfection-seeking machine, a giant robot, and an enormous single-celled amoeba-like creature. Faith in our commanders will be shaken as one by one a Starfleet Commodore becomes dangerously unhinged after losing his entire crew.
Spock undergoes the Vulcan mating ceremony.
The Enterprise is held captive by the Greek god, Apollo.
The Enterprise encounters a probe named Nomad.
Kirk, Scott, McCoy and Uhura enter a parallel universe.
The crew discovers a paradise controlled by computer.
A machine that destroys planets threatens the Enterprise.
Aliens on a mission of conquest hold the crew captive.
A takeover leads Kirk to his old nemesis, Harry Mudd.
The shuttlecraft Galileo makes a forced landing on a world with a single human inhabitant.
Tensions run high when the Enterprise transports ambassadors to the Babel Conferences.
The Enterprise crew becomes embroiled in a local power struggle on a tribal planet.
Accelerated aging affects the senior officers and threatens Kirk's ability to lead.
Kirk is determined to hunt down a vampiric entity he failed to destroy in his past.
Scotty is implicated in a Jack the Ripper-style murder.
The Enterprise is overrun by furry creatures while tangling with Klingons and bureaucrats.
Three disembodied beings wager on fights staged by prisoners abducted from around the galaxy.
Kirk investigates a planet with an Earth-like 1920s gangster culture.
A giant space amoeba threatens the entire galaxy.
The Klingons provide arms to a peaceful planet and disrupt the balance of power.
Telepathic aliens take over Kirk and Spock's bodies.
Enterprise is sent to planet Ekos to investigate a disappearance of Federation historian John Gill.
Extra-galactic beings commandeer the Enterprise in an attempt to return home.
The Enterprise finds a planet devastated by disease that appears to treat the American flag with great reverence.
Enterprise is used to test the new M-5 computer.
The Enterprise goes back in time and discovers a mysterious stranger trying to interfere with 20th-century events.