Kirk and the Enterprise must combat parasitic aliens threatening the lives of millions.

Kirk and Spock must travel into the past in order to correct a change that will alter history.

Kirk and Spock encounter an alien named Lazarus who claims to be from an anti-matter universe.

The Federation and the Klingon Empire teeter on the brink of war as Kirk investigates Organia, a humble planet, inhabited by pacifists, that is unwittingly caught in the middle.

Kirk investigates a series of grisly murders on a mining planet that are the work of a seemingly hostile alien creature.

The Enterprise crew try to rescue colonists from deadly radiation, but instead encounter strange alien spores that seem to offer paradise.

The Enterprise arrives at a planet to establish diplomatic relations and finds itself in the middle of a “peaceful” war that threatens to destroy the ship.

The Enterprise picks up a crew of genetic supermen from the 20th century… and their leader, Khan, plans to create a new empire.

The Enterprise encounters a seemingly peaceful civilization run by a “benevolent” being named Landru… who intends for them to join his people.

When a mysterious alien race destroy an Earth colony, the Enterprise pursues, but Kirk and the alien captain are forced to fight each other by powerful aliens.