Seasons & episodes

S1 · E1Beyond the Farthest Star 1973-09-08 · 24 min＋

Stardate: 5521.3 In orbit around a dead star, the Enterprise comes across a huge starship inhabited by a parasitic life form that threatens the entire ship.

S1 · E2Yesteryear 1973-09-15 · 24 min＋

Stardate: 5373.4 Spock travels back in time to prevent his death as a young Vulcan.

S1 · E3One of Our Planets Is Missing 1973-09-22 · 24 min＋

Stardate: 5371.3 The crew of the Enterprise races to find a way to stop a cloud from destroying inhabited planets.

S1 · E4The Lorelei Signal 1973-09-29 · 24 min＋

Stardate: 5483.7 Female crew members must take over the Enterprise when the men are incapacitated by a race of sirens.

S1 · E5More Tribbles, More Troubles 1973-10-06 · 24 min＋

Stardate: 5392.4 Cyrano Jones introduces tribbles that cannot reproduce.

S1 · E6The Survivor 1973-10-13 · 24 min＋

Stardate: 5143.3 The Enterprise finds a long-lost explorer.

S1 · E7The Infinite Vulcan 1973-10-20 · 24 min＋

Stardate: 5554.4 A race of plant people, and their master, have a plan to force peace onto the galaxy.

S1 · E8The Magicks of Megas-tu 1973-10-27 · 24 min＋

Stardate: 1254.4 At the center of the galaxy, the Enterprise discovers a race of powerful aliens.

S1 · E9Once Upon a Planet 1973-11-03 · 24 min＋

Stardate: 5591.2 Kirk returns to the "shore leave" planet, but it's not as peaceful as it was when they last saw it.

S1 · E10Mudd's Passion 1973-11-10 · 24 min＋

Stardate: 4978.5 Space con artist Harry Mudd returns, selling a fake love potion.

S1 · E11The Terratin Incident 1973-11-17 · 24 min＋

Stardate: 5577.3 The Enterprise crew begins to shrink after radiation exposure.

S1 · E12The Time Trap 1973-11-24 · 24 min＋

Stardate: 5267.6 The Enterprise crew must work with Klingons to escape from a pocket universe.

S1 · E13The Ambergris Element 1973-12-01 · 24 min＋

Stardate: 5499.9 While exploring the planet Argo, Kirk and Spock are turned into water breathers.

S1 · E14The Slaver Weapon 1973-12-15 · 24 min＋

Stardate: 4187.3 Spock, Sulu, and Uhura discover a time capsule from an ancient and technologically advanced race. However, it draws some unwanted attention.

S1 · E15The Eye of the Beholder 1974-01-05 · 24 min＋

Stardate: 5501.2 Telepathic aliens put Kirk, Spock and McCoy in a zoo.

S1 · E16The Jihad 1974-01-12 · 24 min＋

Stardate: 5683.1 Kirk and Spock are recruited for a heist to recover a stolen relic, which if not recovered could spark an galactic jihad.