ENT Episode Overview: Season 4

TREKCORE > ENTERPRISE > EPISODES > Season 4 Overview

 4x01 STORM FRONT, PART 1

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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.
   
 4x02 STORM FRONT, PART 2

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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.
   
 4x03 HOME

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Once the NX-01 finally returns to Earth, the weary crewmen face repercussions of their journeys, both positive and negative.
   
 4x04 BORDERLAND

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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 and avert an interstellar war.
   
 4x05 COLD STATION 12

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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.
   
 4x06 THE AUGMENTS

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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.
   
 4x07 THE FORGE

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Admiral Forrest is killed in a terrorist bombing at the Earth embassy on Vulcan. When the Vulcan High Command believes a religious group known as the "Syrranites" to be responsible, T'Pol learns her mother is a suspected member and has gone into hiding. Along with Captain Archer, T'Pol ventures into Vulcan's desert-- The Forge, in attempt to locate her.
   
 4x08 AWAKENING

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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.
   
 4x09 KIR'SHARA

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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.
   
 4x10 DAEDALUS

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The inventor of the transporter, Emory Erickson, comes aboard Enterprise for a risky experiment.
   
 4x11 OBSERVER EFFECT

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Noncorporeal aliens study the Enterprise crew as they respond to a fatal viral infection brought on board from an away mission.
   
 4x12 BABEL ONE

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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.
   
 4x13 UNITED

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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.
   
 4x14 THE AENAR

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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.
   
 4x15 AFFLICATION

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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.
   
 4x16 DIVERGENCE

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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.
   
 4x17 BOUND

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As a gift for negotiating with the Orion Syndicate, Captain Archer receives three Orion Slave Girls.
   
 4x18 IN A MIRROR, DARKLY, PART 1

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In the mirror universe, Commander Archer seizes control of Enterprise and takes the vessel deep into Tholian space where rumors of an Earth ship from the future turn out to be true; in the form of a 23rd century-Constitution class cruiser.
   
 4x19 IN A MIRROR, DARKLY, PART 2

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With the destruction of Enterprise, Archer assumes command of the U.S.S. Defiant, a starship from a future parallel universe where a governing body known as the United Federation of Planets controls Earth; inspiring T'Pol to rise up against the tyranny of the Terran Empire.
   
 4x20 DEMONS

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A xenophobic faction of humanity threatens to undermine talks to form a new coalition of planets.
   
 4x21 TERRA PRIME

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A human isolationist leader threatens to destroy Starfleet Command unless all aliens leave Earth immediately.
   
 4x22 THESE ARE THE VOYAGES...

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When Admiral Eric Pressman, Commander Riker's commanding officer aboard the Pegasus boards the Enterprise-D and wishes to start experiments on a Federation cloaking device again, Riker must choose whether to honour his vow of secrecy to Pressman or to inform Captain Picard of the admiral's intentions. As guidance, Riker uses the ship's holodeck to recreate the final mission of the NX-01 Enterprise where Trip faced a dilemma of his own.