第 4 季 共 22 集
播出时间:2004年10月9日
第 1 集 Storm Front (1)
播出时间:2004年10月9日
Archer and the NX-01 find themselves in Earth's past, with events of World War II altered by the Temporal Cold War.
第 2 集 Storm Front (2)
播出时间:2004年10月16日
With Silik's help, Archer hones in on the temporal operative who altered Earth's past and threatens to destroy all of time.
第 3 集 Home
播出时间:2004年10月23日
Once the NX-01 finally returns to Earth, the weary crewmen face repercussions of their journeys, both positive and negative.
第 4 集 Borderland
播出时间:2004年10月30日
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.
第 5 集 Cold Station 12
播出时间:2004年11月6日
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.
第 6 集 The Augments
播出时间:2004年11月13日
In defiance of their "father," Arik Soong's Augments devise a heinous plot against the Klingons which will surely lead to interstellar war.
第 7 集 The Forge
播出时间:2004年11月20日
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.
第 8 集 Awakening
播出时间:2004年11月27日
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.
第 9 集 Kir'Shara
播出时间:2004年12月4日
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.
第 10 集 Daedalus
播出时间:2005年1月15日
The inventor of the transporter, Emory Erickson, comes aboard Enterprise for a risky experiment.
第 11 集 Observer Effect
播出时间:2005年1月22日
Non corporeal aliens study the Enterprise crew as they respond to a fatal viral infection brought on board from an away mission.
第 12 集 Babel One
播出时间:2005年1月29日
Enterprise journeys to Babel with a Tellarite ambassador on board for peace talks with the Andorians, when a distress call from Shran is received.
第 13 集 United
播出时间:2005年2月5日
Archer tries to unify the Andorians, Tellarites and Vulcans in a plan to capture a marauder ship threatening to destabilize the region.
第 14 集 The Aenar
播出时间:2005年2月12日
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.
第 15 集 Affliction
播出时间:2005年2月19日
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.
第 16 集 Divergence
播出时间:2005年2月26日
With Columbia's help, the Enterprise crew grapples with sabotage to their ship as they pursue the truth behind the kidnapping of Phlox.
第 17 集 Bound
播出时间:2005年4月16日
As a gift for negotiating with the Orion Syndicate, Captain Archer receives three Orion Slave Girls.
第 18 集 In a Mirror, Darkly (1)
播出时间:2005年4月23日
In the mirror universe, Commander Archer mutinies against Captain Forrest in order to capture a future Earth ship found in Tholian space.
第 19 集 In a Mirror, Darkly (2)
播出时间:2005年4月30日
In the mirror universe, Archer commandeers the 23rd-century Defiant from the Tholians and uses it in a nefarious power grab.
第 20 集 Demons
播出时间:2005年5月7日
A xenophobic faction of humanity threatens to undermine talks to form a new coalition of planets.
第 21 集 Terra Prime
播出时间:2005年5月14日
A human isolationist leader threatens to destroy Starfleet Command unless all aliens leave Earth immediately.
第 22 集 These Are the Voyages...
播出时间:2005年5月14日
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.