Star Trek: Enterprise > Fourth Season

The third season will air from October 8, 2004 to May, 2005. See also the filming schedule.

Storm Front
Season premiere. Airs October 8, 2004.
Archer and the NX-01 find themselves in Earth's past, with events of World War II altered by the Temporal Cold War.
"After destroying the Xindi superweapon, Archer and the Enterprise crew are mysteriously thrust back in time to 1940's Earth to find the Nazis have invaded the U.S. with the help of a strange alien race, on the season premiere of Star Trek: Enterprise, Friday, Oct. 8 at 8:00pm on UPN."

Storm Front, Part II
Airs October 15, 2004.
With Silik's help, Archer hones in on the temporal operative who altered Earth's past and threatens to destroy all of time. "Entrusted to thwart time-traveling aliens from obliterating countless eras, a rescued Archer reunites with his astonished Enterprise crew to lead his officers and American resistance fighters Alicia Travers (guest star Golden Brooks) and Carmine (guest star Steven R. Schirripa) on a mission in Nazi-occupied New York City of the 1940s to destroy the aliens' massive time machine and save the future, on Star Trek: Enterprise, Friday, October 15 (8:00-9:00 PM, ET/PT) on UPN."

Home

Airs October 22, 2004.
Once the NX-01 finally returns to Earth, the weary crewmen face repercussions of their journeys, both positive and negative.

Borderland

Airs October 29, 2004. First of a three-episode story arc; shadows of the Eugenics Wars. Special guest stars Brent Spiner and J.G. Hertzler.
After a dangerous group of genetically engineered humans called Augments escape from their secluded planet intent on causing all-out war between Earth and the Klingons, the Enterprise crew is called into action and Archer enlists the help of the brilliant criminal Dr. Arik Soong (guest star Brent Spiner), the scientist responsible for creating the Augments, on Star Trek: Enterprise, Friday, October 29 (8:00-9:00 PM, ET/PT) on UPN. This three-episode arc expands upon the tale told in the feature film Star Trek II: The Wrath of Kahn, involving the Eugenics War on Earth.

Cold Station 12

Airs November 5, 2004. Second of a three-episode story arc.
With the help of his genetically engineered creations called Augments, brilliant criminal Dr. Arik Soong (guest star Brent Spiner) and his superhuman "children" break into a secret scientific outpost to steal thousands of Augment embryos, and threaten to release the deadly pathogens stored on site if anyone impedes their plan to build an army, on Star Trek: Enterprise, Friday, November 5 (8:00-9:00 PM, ET/PT) on UPN.

The Augments
Airs November 12, 2004. Third of a three-episode story arc.
The Enterprise crew must pursue brilliant criminal Dr. Arik Soong (guest star Brent Spiner) and his superhuman Augments across hostile Klingon space to a planet where the geneticist intends to raise an army of his creations, but a surprise revolt by his hostile "children" could lead to the destruction of a Klingon world, on Star Trek: Enterprise, Friday, November 12 (8:00-9:00 PM, ET/PT) on UPN. This arc expands upon the mythology created in the original Star Trek series and feature film Star Trek II: The Wrath of Kahn, involving the violent race of genetic supermen who caused the Eugenics War on Earth.
The Forge
Airs November 19, 2004. First of a three-episode story arc; terrorist attack on Vulcan
Awakening
Airs November 26, 2004. Second of a three-episode story arc.
Kir'Shara
Airs December 3, 2004. Third of a three-episode story arc.
Daedalus
Airs December 17, 2004. Standalone episode about the creator of the transporter.
Observer Effect
Airs January 7, 2005. Standalone episode about energy beings taking over the crew.
Babel One
Airs ???. First of a three-episode story arc
United
Airs ???. TBA.
The Aenar
Airs ???. TBA.
(episode 91)
Airs ???. TBA.