The Enterprise crew attempt to return a wounded Klingon to his home, but when he is kidnapped, they must get him back to avoid catastrophe.
The Enterprise crew continues its mission to retrieve an injured Klingon, who was kidnapped by the Suliban race, and take him back to his home.
The Enterprise crew discovers an abandoned ship, in which they find 15 humanoid corpses that appear to have been part of an alien experiment.
Something is wrong when the Enterprise crew experience hallucinations and paranoia when visiting a deserted planet.
Trip gets an unexpected surprise when he becomes friendly with a female alien.
The Enterprise crew investigates an Earth colony in which its inhabitant disappeared decades ago.
T'Pol and the rest of the Enterprise crew visit an ancient Vulcan spiritual sanctuary, only to find it has been taken over by Vulcan enemies.
Trip discovers that T'Pol is sending secrets to a Vulcan ship
Disguised as Aliens, the crew of the Enterprise explores a civilized planet similar to Earth.
Nausicaan pirates attack a human freight vessel, and the Enterprise crew comes to their rescue.
Archer invites alien tourists aboard the ship and to his surprise encounters Silk, his Suliban rival.
When the Enterprise is attacked by an unidentified ship, the crew must band together to strike back.
Dr. Phlox refuses to aid an alien race due to his ethical concerns in the matter.
The Enterprise crew discovers and explores a disabled Klingon vessel.
The crew learns that T'Pol has been instructed to leave the Enterprise by the Vulcan High Command.
Trip and Reed are caught adrift in a field of asteroids after their shuttle malfunctions.
A group of Vulcans who are able to experience new emotions visit the crew of the Enterprise.
The crew encounters alien creature-hunters while exploring an unknown planet.
Trip is the only one able to save his crewmates when intergalactic pirates take over the ship.
While investigating a ship that crashed on a remote planet, the crew encounters strange visions and spirits.
Archer and Mayweather mistakenly enter a military zone and are detained by aliens.
Hoshi must try to convince an alien, which has cocooned and is feeding off of Archer and Trip, to return to its home planet.
When the Enterprise is sent to pick up a Vulcan ambassador who has been expelled, they end up protecting her when they find out she is in danger.
Archer and Trip help a desert-planet nomad with his ship, but end up getting themselves involved in the planet's political issues.
The Enterprise crew enjoys a vacation on a planet on which their fantasies become reality.
Archer travels through time to help save the Enterprise.