Season Guide
Star Trek: Enterprise Season 4
Season 4 Review
⚠ Spoiler alert Season notes below reveal how the story develops.
Season 4 of Star Trek: Enterprise premiered 2004-10-08 and ran 22 episodes through 2005-05-13.
Episodes
1
Summary Archer awakes from destroying the Xindi superweapon in the U.S. circa 1944 as a prisoner of Nazis controlling New York City. But he escapes with the help of American…
2
SummaryVosk and his people altered Earth's past, threatening to destroy many futures. Frustrated by limited Nazi technology, Vosk offers to return Trip and Mayweather to the Enterprise if Archer assists…
3
Summary The Enterprise finally returns to Earth with great fanfare, and the weary crew members face repercussions of their journeys, both positive and negative. But the novelty quickly disappears for Archer, forced…
4
Summary When genetically engineered humans left over from the Eugenics Wars hijack a Klingon ship, the Klingons threaten war with Earth. Archer enlists the criminal Dr. Arik Soong, the Augments’…
5
Summary Cold Station 12 is a medical research facility where hundreds of genetically enhanced embryos left over from the Eugenics Wars are still stored. Arik Soong leads his band of…
6
Summary The Enterprise crew cautiously pursues Dr. Arik Soong and his superhuman Augments across hostile Klingon space toward a hidden planet where he intends to raise his Augment army. But in defiance…
7
Summary The crew joins forces with Vulcan authorities to investigate a deadly bombing of Earth’s embassy, which may be the work of a sect devoted to the logical teachings of…
8
SummaryThe Syrranites subject Archer to a potentially lethal mind meld after learning that information about Surak was placed in his head. Meanwhile, Vulcan officials plot the dissidents' destruction.Our TakeA well…
9
SummaryAs Vulcan prepares for war, V'Las sends a commando team to eliminate Archer, T'Pol and T'Pau, while Soval risks his sanity to warn the Andorians of the impending attack.Our TakeVery…
10
Summary Emory Erickson, the inventor of the transporter, boards the Enterprise to test new transporter upgrades. He also enlists Archer’s help with a risky experiment resulting in a crew member’s death. This…
11
SummaryTwo bodiless Organians possess the bodies of various crew members to observe humanity's reaction to tragedy. The curious beings study the response of the Enterprise crew to a fatal silicon based viral…
12
SummaryWhile escorting a Tellarite ambassador to the neutral planet Babel for a peace conference with the Andorians, the Enterprise is attacked after answering a distress call from Shran. A secret Romulan vessel…
13
SummaryArcher tries to unify the Andorians, Tellarites, and Vulcans in a plan to capture a remote controlled Romulan marauder ship threatening to destabilize the region. But, a desire for vengeance…
14
SummaryArcher and the crew try to prevent the Romulans from starting an intergalactic war. He visits Shran's icy homeworld to find an Andorian subspecies called the Aenar to determine their…
15
Summary Enterprise visits Earth for the launch of its sister vessel Columbia, where Trip prepares for her maiden voyage as her new chief engineer. Meanwhile, Klingons kidnap Phlox and force him to…
16
SummaryWith Columbia's help, the Enterprise crew grapples with the sabotage left by Klingon Augments as they pursue the truth behind Dr. Phlox's kidnapping. Trip rejoins Enterprise on a do or die mission to rejuvenate her warp…
17
Summary As a gift for negotiating a deal with the Orion Syndicate, an Orion pirate persuades Archer to accept three alluring Orion slave women. But the captain’s good faith gesture…
18
Summary An amoral, imperialistic version of the Enterprise crew exists in a dark alternate universe. Commander Archer of the Terran Empire Enterprise mutinies against Captain Forrest to investigate an anomaly in Tholian…
19
Summary In the mirror universe, hungry for power Archer and the crew use the 23rd-century Defiant to thwart a Tholian attack and its advanced weaponry to put down a rebellion setting their…
20
Summary Archer and the crew are on Earth for a historic conference at Starfleet Headquarters to establish an interplanetary coalition. But the plans are menaced by a fanatical xenophobe, John…
21
SummaryDetermined to scorch Starfleet Command in San Francisco if Earth refuses to abolish a proposed interplanetary alliance and make all aliens leave Earth immediately, Paxton blackmails Trip into modifying his…
22
Summary Commander Riker interacts with Archer’s crew in a hologram of their final mission as he deals with a dark secret from his past. Six years after the Terra Prime…