During the mid-22nd century, a century before Captain Kirk's five-year mission, Jonathan Archer captains the United Earth ship Enterprise during the early years of Starfleet, leading up to the Earth-Romulan War and the formation of the Federation.
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see all options Availability data: JustWatch
- Seasons
- 4
- Episodes aired
- 97
- Latest aired
- S04E21
- Total runtime
- 2d 22h
Timeline when each season aired
- Season 1 September 2001 – May 2002 25 episodes
- Season 2 September 2002 – May 2003 26 episodes
- Season 3 September 2003 – May 2004 24 episodes
- Season 4 October 2004 – May 2005 22 episodes
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S04E01 Storm Front (1)
October 8 · 43min find the promo
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Archer and the NX-01 find themselves in Earth's past, with events of World War II altered by the Temporal Cold War.
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S04E02 Storm Front (2)
October 15 · 43min find the promo
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With Silik's help, Archer hones in on the temporal operative who altered Earth's past and threatens to destroy all of time.
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S04E03 Home
October 22 · 43min find the promo
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Once the NX-01 finally returns to Earth, the weary crewmen face repercussions of their journeys, both positive and negative.
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S04E04 Borderland (1)
October 29 · 43min find the promo
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When genetic supermen left over from the Eugenics Wars hijack a Klingon ship, Archer must rely on their creator, the criminal Dr. Arik Soong, to help hunt them down.
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S04E05 Cold Station 12 (2)
November 5 · 43min find the promo
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Arik Soong leads his band of Augments to a medical facility where hundreds of genetically enhanced embryos are still stored, intending to retrieve them and bring them to life.
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S04E06 The Augments (3)
November 12 · 43min find the promo
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In defiance of their "father," Arik Soong's Augments devise a heinous plot against the Klingons which will surely lead to interstellar war.
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S04E07 The Forge (1)
November 19 · 43min find the promo
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Earth's embassy on Vulcan is bombed, and the ensuing investigation puts Archer and T'Pol on the trail of a Vulcan religious faction hiding in a treacherous desert.
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S04E08 Awakening (2)
November 26 · 43min find the promo
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Archer and T'Pol encounter the Syrrannites, a radical group hiding in the Vulcan desert, while the NX-01 crew contends with Vulcan power ploys.
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S04E09 Kir'Shara (3)
December 3 · 43min find the promo
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Archer, T'Pol and T'Pau attempt to bring the Kir'Shara — an artifact believed to contain Surak's original writings — to the Vulcan capital, as the NX-01 gets involved in a Vulcan-Andorian military clash.
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S04E10 Daedalus
January 14 · 43min find the promo
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The inventor of the transporter, Emory Erickson, comes aboard Enterprise for a risky experiment.
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S04E11 Observer Effect
January 21 · 43min find the promo
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Non corporeal aliens study the Enterprise crew as they respond to a fatal viral infection brought on board from an away mission.
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S04E12 Babel One (1)
January 28 · 43min find the promo
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Enterprise journeys to Babel with a Tellarite ambassador on board for peace talks with the Andorians, when a distress call from Shran is received.
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S04E13 United (2)
February 4 · 43min find the promo
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Archer tries to unify the Andorians, Tellarites and Vulcans in a plan to capture a marauder ship threatening to destabilize the region.
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S04E14 The Aenar (3)
February 11 · 43min find the promo
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Archer visits Shran's icy homeworld to find an Andorian subspecies called the Aenar, to determine their connection to the marauder destroying ships in the region.
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S04E15 Affliction (1)
February 18 · 43min find the promo
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While Enterprise visits Earth for the launch of Columbia, Phlox is kidnapped and forced to help the Klingons deal with a grave threat toward their species.
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S04E16 Divergence (2)
February 25 · 43min find the promo
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With Columbia's help, the Enterprise crew grapples with sabotage to their ship as they pursue the truth behind the kidnapping of Phlox.
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S04E17 Bound
April 15 · 43min find the promo
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As a gift for negotiating with the Orion Syndicate, Captain Archer receives three Orion Slave Girls.
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S04E18 In a Mirror, Darkly (1)
April 22 · 43min find the promo
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In the mirror universe, Commander Archer mutinies against Captain Forrest in order to capture a future Earth ship found in Tholian space.
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S04E19 In a Mirror, Darkly (2)
April 29 · 43min find the promo
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In the mirror universe, Archer commandeers the 23rd-century Defiant from the Tholians and uses it in a nefarious power grab.
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S04E20 Demons (1)
May 6 · 43min find the promo
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A xenophobic faction of humanity threatens to undermine talks to form a new coalition of planets.
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S04E21 Terra Prime (2)
May 13 · 43min find the promo
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A human isolationist leader threatens to destroy Starfleet Command unless all aliens leave Earth immediately.
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S04E22 These Are the Voyages...
May 13 · 43min find the promo
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Six years in the future, an emotional Captain Archer and the crew return to Earth to face the decommission of Enterprise and signing of the Federation charter.