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.
The Xindi (Episode 1) 7.2
Writer: Brannon Braga
Air date: 2003-09-10
Runtime: 43 min
Overview: Captain Archer and his crew set out to gain information about the mysterious and antagonistic Xindi race.
Anomaly (Episode 2) 7.6
Writer: Michael Sussman
Air date: 2003-09-17
Runtime: 43 min
Overview: Enterprise starts experiencing effects of the spatial distortions pervading the Delphic Expanse, and falls victim to predatory aliens.
Extinction (Episode 3) 6.0
Writer: André Bormanis
Air date: 2003-09-24
Runtime: 43 min
Overview: On a mission to investigate an abandoned Xindi vessel on a jungle planet, Archer, Reed and Hoshi succumb to a virus that mutates them into a primal life form.
Rajiin (Episode 4) 6.7
Writer: Chris Black
Air date: 2003-10-01
Runtime: 43 min
Overview: The NX-01 gets closer to a showdown with the Xindi when Captain Archer takes on an enigmatic passenger: a beautiful slave named Rajiin.
Impulse (Episode 5) 7.2
Writer: Jonathan Fernandez
Air date: 2003-10-08
Runtime: 43 min
Overview: When Enterprise responds to a distress call from a Vulcan ship stranded in the Delphic Expanse, Archer and his boarding team are attacked by insane zombie-like Vulcans.
Exile (Episode 6) 7.0
Writer: Phyllis Strong
Air date: 2003-10-15
Runtime: 43 min
Overview: A powerful telepath makes contact with Hoshi and offers to help Enterprise find the Xindi ... for a price.
The Shipment (Episode 7) 7.3
Writer: Chris Black
Air date: 2003-10-29
Runtime: 43 min
Overview: Archer, Reed and Major Hayes infiltrate a Xindi-Sloth industrial colony to learn more about the weapon of mass destruction that will be used against Earth.
Twilight (Episode 8) 8.3
Writer: Michael Sussman
Air date: 2003-11-05
Runtime: 43 min
Overview: A spatial distortion leaves Archer unable to form any new long-term memories. Years in the future, he wakes up one morning and is stunned to learn the outcome of the human-Xindi conflict.
North Star (Episode 9) 6.2
Writer: David A. Goodman
Air date: 2003-11-12
Runtime: 43 min
Overview: When a settlement of humans living a 19th-century Western lifestyle is discovered on a Delphic Expanse planet, Archer and crew set out to learn how they got there.
Similitude (Episode 10) 7.7
Writer: Manny Coto
Air date: 2003-11-19
Runtime: 43 min
Overview: When Trip suffers a catastrophic injury, his only hope for survival is a transplant from a "mimetic symbiont" which Phlox grows from one of his exotic creatures.
Carpenter Street (Episode 11) 6.8
Writer: Brannon Braga
Air date: 2003-11-26
Runtime: 43 min
Overview: Archer and T'Pol travel back in time to 2004 Detroit to stop a Xindi plot.
Chosen Realm (Episode 12) 6.3
Writer: Manny Coto
Air date: 2004-01-14
Runtime: 43 min
Overview: Religious zealots hijack Enterprise to use it as a weapon against the enemies of their faith.
Proving Ground (Episode 13) 8.0
Writer: Chris Black
Air date: 2004-01-21
Runtime: 43 min
Overview: An Andorian ship led by Commander Shran arrives in the Delphic Expanse to help Enterprise hone in on the Xindi super-weapon.
Stratagem (Episode 14) 7.8
Air date: 2004-02-04
Runtime: 43 min
Overview: Archer finds himself face-to-face with Degra, the designer of the Xindi superweapon, and tries to get him to reveal its location.
Harbinger (Episode 15) 6.6
Air date: 2004-02-11
Runtime: 43 min
Overview: As Archer tries to unravel the mystery of a rescued alien, long-simmering feelings explode among his senior officers.
Doctor's Orders (Episode 16) 7.1
Writer: Chris Black
Air date: 2004-02-18
Runtime: 43 min
Overview: The fate of Enterprise is in Dr. Phlox's hands as the rest of the crew must be induced into a coma in order to survive a trans-dimensional disturbance.
Hatchery (Episode 17) 6.9
Writer: Michael Sussman
Air date: 2004-02-25
Runtime: 43 min
Overview: Archer goes to extreme lengths to save an abandoned nest of Xindi-Insectoid eggs ready to hatch.
Azati Prime (Episode 18) 8.1
Writer: Brannon Braga
Air date: 2004-03-03
Runtime: 43 min
Overview: Archer sets out on a suicide mission to destroy the Xindi superweapon as Enterprise faces a brutal attack.
Damage (Episode 19) 7.8
Writer: Phyllis Strong
Air date: 2004-04-21
Runtime: 43 min
Overview: While dissension among Xindi ranks festers, Enterprise tries to recover from a devastating attack.
The Forgotten (Episode 20) 7.7
Writer: David A. Goodman
Air date: 2004-04-28
Runtime: 43 min
Overview: Two high-ranking Xindi offer to stop the launch of their superweapon if Archer can prove they've been manipulated. Meanwhile, the crew mourns their lost mates.
E² (Episode 21) 7.5
Writer: Michael Sussman
Air date: 2004-05-05
Runtime: 43 min
Overview: An attempt to use a Xindi subspace corridor leads the Enterprise crew to a bizarre encounter with their own descendants.
The Council (Episode 22) 8.0
Writer: Manny Coto
Air date: 2004-05-12
Runtime: 43 min
Overview: Archer and Hoshi stand before the Xindi Council as T'Pol and Reed lead a team into the heart of a Sphere.
Countdown (Episode 23) 8.1
Writer: André Bormanis
Air date: 2004-05-19
Runtime: 43 min
Overview: With help from Xindi allies, the Enterprise crew attempts to stop the arming of the Weapon aimed toward Earth.
Zero Hour (Episode 24) 8.1
Writer: Brannon Braga
Air date: 2004-05-26
Runtime: 43 min
Overview: Archer puts his life on the line in a risky gambit to intercept the Xindi superweapon and disarm it from within.